Coronavirus pandemic: daily updated research and data.
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Coronavirus (COVID-19) TestingStatistics and Research

We are grateful to everyone whose editorial review and expert feedback on this work helps us to continuously improve our work on the pandemic. Thank you. Here you find the acknowledgements.

Our testing dataset is updated around twice a week. Last update: 30 May 2020 21:00, London time.

Our work belongs to everyone

Why is data on testing important?

No country knows the total number of people infected with COVID-19. All we know is the infection status of those who have been tested. All those who have a lab-confirmed infection are counted as confirmed cases.

This means that the counts of confirmed cases depend on how much a country actually tests. Without testing there is no data.

Testing is our window onto the pandemic and how it is spreading. Without data on who is infected by the virus we have no way of understanding the pandemic. Without this data we can not know which countries are doing well, and which are just underreporting cases and deaths.

To interpret any data on confirmed cases we need to know how much testing for COVID-19 the country actually does.

The Our World in Data COVID-19 Testing dataset

Because testing is so very crucial to understanding the spread of the pandemic and responding appropriately we have focused our efforts on building a global dataset on COVID-19 testing. 

  • The testing dataset is updated around twice a week. The latest version is always available in the section below.
  • And as with all our work, it is freely accessible for everyone. The data can be downloaded here on GitHub.

Are countries testing enough to monitor their outbreak?

To be able to properly monitor the spread of the virus, countries with more widespread outbreaks need to do more testing.

So one important way to understand if countries are testing sufficiently is to ask: How many tests does a country do to find one COVID-19 case? This is what the map chart here shows.

We see enormous differences across countries.

  • Some countries, like Australia, South Korea and Slovenia do hundreds, or even thousands of tests for each case they find.
  • Others, such as Mexico and Nigeria, only do a handful of tests – five or fewer – for every confirmed case.

Countries that do very few tests per confirmed case are unlikely to be testing widely enough to find all cases. The WHO has suggested around 10 – 30 tests per confirmed case as a general benchmark of adequate testing.1

The scale of testing compared to the scale of the outbreak

This scatter chart provides another way of seeing the extent of testing relative to the scale of the outbreak in different countries.

The chart shows the daily number of tests (vertical axis) against the daily number of new confirmed cases (horizontal axis), per million people.

Looking down the chart, we see some countries doing ten or hundred times fewer tests than other countries with a similar number of new confirmed cases.

Conversely, looking to the right, we see some countries find ten or a hundred times more cases than others out a similar number of tests.

Where the number of confirmed cases is high relative to the extent of testing, this suggests that there may not be enough tests being carried out to properly monitor the outbreak. In such countries, the true number of infections may be far higher than the number of confirmed cases.

How many tests are performed each day?

This chart shows the number of daily tests per thousand people. Because the number of tests is often volatile from day to day, we show the figures as a seven-day rolling average.

What is counted as a test?

The number of tests does not refer to the same in each country – one difference is that some countries report the number of people tested, while others report the number of tests (which can be higher if the same person is tested more than once). And other countries report their testing data in a way that leaves it unclear what the test count refers to exactly.

We indicate the differences in the chart and explain them in detail in our accompanying source descriptions.

How to interact with this chart

  • By clicking on  Add country  you can show and compare the data for any country in the world you are interested in.
  • If you move both ends of the time-slider to a single point you will see a bar chart for this point in time.
  • You can switch to the ‘MAP’ tab.

In all our charts you can download the data

We want everyone to built on top of our work and therefore we always make all our data always available for download. Click on the ‘Data’-tab below the chart and you can download the shown data for all countries in a simple to use csv file.

World map: total tests performed relative to the size of population

This map shows you how the total number of tests per thousand people compares across all countries in our dataset.

How to interact with this chart

  • By moving the time slider (below the map) you can see how testing coverage has changed over time.
  • You can focus on a particular world region using the dropdown menu to the top-right of the map.
  • Hovering over a country lets you see the exact number.

The importance of testing

Testing is our window onto the pandemic and how it is spreading. Without testing we have no way of understanding the pandemic.

It is one of our most important tools in the fight to slow and reduce the spread and impact of the virus. Tests allow us to identify infected individuals, guiding the medical treatment that they receive. It enables the isolation of those infected and the tracing and quarantining of their contacts.2 And it can help allocate medical resources and staff more efficiently.3

In addition, testing for COVID-19 also informs our understanding of the pandemic and the risks it poses in different populations.

This knowledge is important if we are to properly assess the interventions that should be implemented, including very costly interventions such as social distancing and the shutdown of entire regions and industries.

Why data on testing is needed

Without data on COVID-19 we cannot possibly understand how the pandemic is progressing.

Without data we cannot respond appropriately to the threat; neither as individuals nor as a society. Nor can we learn where countermeasures against the pandemic are working. 

The number of confirmed cases is what informs us about the development of the pandemic.

But the confirmation of a case is based on a test. The World Health Organization defines a confirmed case as “a person with laboratory confirmation of COVID-19 infection”.4

Reliable data on testing is therefore necessary to assess the reliability of the data that informs us about the spread of the pandemic: the data on cases and deaths.

Different types of tests for COVID-19

There are many different technologies for COVID-19 testing, some currently available and some still in development. Trackers of the development, regulatory status and commercial release of different types of COVID-19 test are being compiled by Johns Hopkins University and the medical industry news website, 360Dx.

Broadly, we can divide these different tests into two kinds:

  • those that test for the presence of the virus, aiming to establish whether an individual is currently infected. The most common way of performing a test of the first type is with a ‘PCR’ test.5
  • those that test for the presence of antibodies, aiming to establish whether an individual has been infected at some point in the past.

Currently, we aim to include only these PCR tests in our testing dataset.

We do this for the following reasons:

  1. Our focus is on using testing data to help properly interpret the data we have on confirmed cases and deaths. Case confirmation is generally based on a positive result from a PCR test, in line with WHO recommendations.6 So including antibody tests in our figures would mean they were less useful for this purpose.
  2. Other kinds of test beyond PCR are not yet being widely used. This also means that data on how many of these tests have been conducted is very limited. Including such data in our counts when it is available would reduce the comparability of our data across countries.
  3. There are technical differences in how results from these different tests should be interpreted. Current data suggests that other existing testing technologies are subject to very different rates of false positive and false negative results than PCR tests.7 This is another reason why aggregating the data across these different types of test is not the best way of using testing data to help us understand the epidemic.

Our checklist for COVID-19 testing data

We need to understand what the published numbers on testing mean 

Different countries publish their testing data according different definitions. In order to make meaningful comparisons between countries and over time, the figures need to be interpreted alongside an understanding of these differences.

This means that, in addition to the numbers, detailed descriptions are needed to make clear what the numbers precisely mean. For each country in our dataset, we provide source descriptions detailing all the information that we have been able to find. However, many countries currently do not provide sufficient documentation.

For citizens to trust and understand the published data, and for countries to learn from each other, it is crucial that every country provides the data on testing in a clearly documented way.

To help guide users and producers of testing data, we provide the following checklist of questions. Clear answers to these questions are what is needed to properly interpret and compare published numbers.

Our checklist of questions to understand testing data

1) Is there no data – or it is just hard to find?

Many countries are not yet providing official figures. Others do not do so on a regular basis. The first question to ask, then, is if there is any testing data for a given country.

Equally important is to make the available data findable. Currently, the available data is often not easy to find, because some countries are releasing figures at unpredictable intervals in ad-hoc locations (including social media or press conferences).

2) What testing technologies are being used?

There are many different technologies for COVID-19 testing, some of which are already implemented, some currently available but not yet rolled out, and some still in development.  As we discuss here, these different tests are used with different objectives in mind, and there are technical differences in how results from these different testing technologies should be interpreted. 

It’s critical that governments provide a detailed and explicit account of the technologies that are being implemented as they get rolled out, disaggregating the test results accordingly. For citizens to trust and understand the published data, and for epidemiologists to incorporate the data into the models that inform public policy, it is crucial that every country provides the data on testing in a clearly documented way.

3) Do numbers refer to ‘performed tests’ or ‘individuals tested’?

The number of tests performed is different to the number of individuals tested. The reason for this is that it is common for COVID-19 testing that the same person is tested more than once.

Some countries report tests performed, while others report the number of individuals tested.

The source description should state clearly what is counted.

4) Are negative results included? Are pending results included?

It needs to be clear whether or not figures for the total number of tests performed, or the number of people tested, include negative test results, as well as the number of tests that are pending results.

Many sources report the number of individuals who are ‘suspected’ or have been ‘ruled out’. To be reliably included in test counts, it needs to be explicit whether such categories reflect the number of people who are awaiting test results or have tested negatively.

5) Do the figures include all tests conducted in the country, or only some? 

Figures reported by countries may only be partial if not all laboratories are reporting to the central authority.

The scope of testing data should be made explicit by the source. For instance, the US CDC make it clear that their figures do not include tests conducted in private labs.

6) Are all regions and laboratories within a country submitting data on the same basis?

Answers to the questions above may vary from region to region. In order to assess the reliability of aggregate testing data, it needs to be clear if heterogenous data is being summed together.

The US COVID Tracking Project, for instance makes it clear that their US totals combine data for tests performed and individuals tested, depending on which is reported by individual states.

7) What period do the published figures refer to?

Cumulative counts of the total number of tests should make clear the date from which the count begins. The key question that needs to be answered is whether the figures published at some date (attempt to) include all tests conducted up to that date.

Because the reporting of tests can take several days, for some countries figures for the last few days may not yet be complete. It needs to be made clear by the source if this may be the case. The US CDC, for instance, makes this clear.

8) Are there any issues that affect the comparability of the data over time?

If we want to look at how testing figures are changing over time, we need to know how any of the factors discussed above may have changed too.

The Netherlands, for instance, makes it clear that not all labs were included in national estimates from the start. As new labs get included, their past cumulative total gets added to the day they begin reporting, creating spikes in the time series.

9) What are the typical testing practices in the country?

Having a sense of how often and when individuals are tested, can help the users of these statistics understand how estimates of tests performed and individuals tested might relate to each other.

For instance, how many tests does a case investigation require? What are the eligibility criteria to be tested? Are health workers, or other specific groups, being routinely retested?

10) Might any of the information above be lost in translation?

People accessing data published in a language in which they are not fluent may misinterpret the data by mistranslating the provided text, which often includes technical terms.

Many countries report testing data in multiple languages – this helps disseminate the information to a broader audience, whilst helping prevent misinterpretations.


Download the data

Last update: 30 May 2020 21:00, London time.
(Our testing dataset is updated around twice a week.)

We make our full testing dataset, alongside detailed source descriptions, available on GitHub here. Our testing dataset is updated around twice a week.

About the dataset

Our goal at Our World in Data is to provide testing data over time for many countries around the world.

To do this, we collect publicly available information published by official sources on a regular basis. Our dataset is updated around twice a week.

Alongside the data, we also aim to provide a good understanding of the definitions used and any important limitations they might have. Our checklist of questions about testing data is what guides our efforts.

We present this information in source descriptions for each country included in the dataset. But in many cases sources do not yet provide the detailed descriptions of the data we would like.

Which countries do we have testing data for?

In this map countries for which testing data can be found in our dataset are shown in blue.

As you can see, we do not have data for all countries in our dataset. Those countries where we have looked, but have not been able to find any official sources of testing data are shown in red. Countries which we are either in the process of adding to our dataset, or for which we have not yet been able to look for data are shown in grey.

How up to date is our data for different countries?

Countries publish their testing data at different frequencies: some provide daily updates, others only weekly, and some only publish figures on an ad-hoc basis at longer intervals.

Because of this, the most recent data we have for different countries refers to different dates. This chart shows you how up to date the latest data is for each country in our dataset.

Our dataset covers 66% of the world’s population:

  • 53% is covered with figures relating to 29 May 2020 or later;
  • 61% is covered with figures relating to 23 May 2020 or later.

Source information country-by-country

Argentina

→ View the country profile of Argentina for the coronavirus pandemic.

Source: Government of Argentina
Short description: The number of tests performed.

Latest estimate: 0.12 daily tests per thousand people (as of 29 May 2020).

Detailed description:

Two reports are published daily by the Government of Argentina. Since 8th April the morning report gives the cumulative total of “tests carried out” in the country. No information is given on the geographical scope and number of labs included.

Australia

→ View the country profile of Australia for the coronavirus pandemic.

Source: Australian Government Department of Health
Short description: The number of tests performed.

Latest estimate: 1.18 daily tests per thousand people (as of 29 May 2020).

Detailed description:

We construct a time series of the cumulative number of tests performed to date using data provided by the Australian Government Department of Health through daily health alerts and weekly epidemiological reports.

The weekly epidemiological reports make it clear that the figures relate to diagnostic testing. It is unclear whether the reported figures include pending test results. It is also unclear when the first test was conducted, since we have not been able to find official data prior to March 22nd 2020 (at which point 143,056 tests had been performed).

The daily health alerts have provided testing figures since April 5th 2020, whereas the weekly epidemiological reports have provided testing figures since March 22nd 2020. In the daily health alerts, testing figures are reported within the “Coronavirus (COVID-19) at a glance” infographic. View the entire collection of these infographics dating back to April 5th 2020.

Austria

→ View the country profile of Austria for the coronavirus pandemic.

Source: Austria Health Ministry
Short description: The number of tests performed

Latest estimate: 0.87 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Ministry for Health publishes daily updates of the COVID-19 situation here.html), which include data on the cumulative number of tests performed to date. We construct a daily time series using Web Archive snapshots.html) of these updates.

It is unclear whether the reported figures include pending test results.

A footnote explains that “The number ‘testing’ is the total number of all Covid tests carried out. The data for this are largely reported by the performing laboratories.”

The same figures are also provided by the Ministry for Health in this official dashboard.

Bahrain

→ View the country profile of Bahrain for the coronavirus pandemic.

Source: Bahrain Ministry of Health
Short description: The source reports the ‘number of assessments’ conducted. It is unclear whether this refers to the total number of tests conducted, or the number of people tested.

Latest estimate: 3.17 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Bahrainian Ministry of Health publishes frequent updates (not daily, but with high frequency) on the number of confirmed cases, status of existing cases and number of assessments conducted.

These figures represent the cumulative tests to that given date. It is not clear whether this refers to the total number of tests conducted, or the number of people tested.

These updates are not provided daily – typically every few days, so a daily time-series is not available. However, using web archives we can construct a time-series of tests conducted over time based on these frequent updates. It is not clear when testing first began; data is only available from 5th March where it was reported that 5334 tests had been conducted.

Bangladesh

→ View the country profile of Bangladesh for the coronavirus pandemic.

Source: Government of Bangladesh
Short description: The number of samples tested.

Latest estimate: 0.07 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Government of Bangladesh provides data on the total number of samples tested (“মোট পরিক্ষাকৃত নমুনার সংখ্যা”) to date in this official dashboard. The full time series of samples tested can be downloaded in the detailed dashboard, which dates back to March 4th 2020.

It is not clear whether the reported figures include samples in which the test results are pending.

Belarus

→ View the country profile of Belarus for the coronavirus pandemic.

Source: Belarus Ministry of Health
Short description: The number of tests performed.

Detailed description:

The Belarus Ministry of Health provides daily press releases that report the cumulative number of tests conducted to date. It is unclear whether the reported figures include pending tests.

Prior to April 14th 2020, the Ministry reported imprecise testing figures (e.g. “…more than 64 thousand tests…”). We include these imprecise figures so that our time series extends back to March 3rd 2020.

The earliest reported figure that we have been able to find is from March 3rd 2020, at which point approximately 5,000 cumulative tests were reported. The number of tests are cumulative since late January 2020, but the press releases do not specify the exact date on which the first test was conducted.

Belgium

→ View the country profile of Belgium for the coronavirus pandemic.

Source: Sciensano (Belgian institute for health)
Short description: The data is described both as the number of tests performed and as the number of tested patients.

Latest estimate: 0.58 daily tests per thousand people (as of 28 May 2020).

Detailed description:

Sciensano provides a daily time series of the number of tests conducted per day, which is updated retrospectively as new data becomes available each day.

According to the dataset codebook, dates for new testing figures correspond to the date of laboratory diagnosis (or when not available, date of sampling).

It appears that the reported testing figures represent the number of people tested, but this is not entirely clear. The official website describes the testing dataset as the “Dataset of total number of tests performed by date”, yet the dataset codebook defines the “tests” variable as the “number of tested patients”.

It is also unclear whether the testing figures include antigen tests in addition to PCR tests. In a communication on April 3rd 2020, Sciensano indicates that antigen tests made by Coris Bioconcept may now be used for COVID-19 detection. The communication states that positive antigen test results do not have to be confirmed by a PCR test, but that negative or doubtful cases must be confirmed by a PCR test.

Official figures reported in Sciensano’s daily epidemiological bulletins do not help to clarify these ambiguities. For example, as of May 10th 2020, the official time series dataset reported a cumulative total of 465,201 tests performed between March 1st and May 9th. However, the epidemiological bulletin for May 10th 2020 states that 325,796 cumulative tests had been performed by laboratories between the beginning of March and May 9th, while an additional 240,305 tests had been performed through the national testing platform (566,101 total tests).

The bulletin indicates that these figures include both PCR and antigen tests, suggesting that the large discrepancy between the 465,201 figure and the 566,101 figure may be solely due to the fact that the official time series data only includes PCR tests, whereas the official bulletin figures include both PCR and antigen tests. However, it is also possible that the discrepancy is due solely to the fact that the official time series data is reported in terms of “people tested”, whereas the bulletin figures represent “tests performed”. We have been unable to find official documentation from Sciensano that resolves these ambiguities.

Bolivia

→ View the country profile of Bolivia for the coronavirus pandemic.

Source: Ministry of Health
Short description: Units unclear.

Latest estimate: 0.1 daily tests per thousand people (as of 28 May 2020).

Detailed description:

Official testing data from the Bolivian Ministry of Health is reported in daily briefs on their website. The briefs often (but do not always) provide a breakdown of the cumulative number of confirmed, suspected, and negative (also called discarded) tests to date. We measure the total number of tests to date as the sum of the number of confirmed and negative tests.

The units for the testing numbers are unclear. They are variously referred to as tests (“pruebas”), samples (“muestras”), or people who have undergone tests (”personas, que fueron sometidas a pruebas”).

In 10 briefs the number of negative tests was not reported, preventing us from calculating a total for that date. For these dates with missing official data, we use data provided in this unofficial GitHub repository, which we have cross-referenced against the official data for all dates.

Brazil

→ View the country profile of Brazil for the coronavirus pandemic.

Source: Brazil Ministry of Health
Short description: The number of tests performed.

Detailed description:

The Ministry of Health press releases published on its website intermittently include figures for the number of tests carried out for a range of respiratory infections, further specifying the figures carried out for the ‘specific investigation of COVID-19’. The releases note that ‘Tests for coronavirus began to be carried out from February 16 in public and private laboratories’.

More recently, the Ministry of Health has begun reporting figures for the number of PCR and ‘rapid tests’ on a dashboard on its Panel of beds and inputs webpage. However we do not include these figures because they appear to relate to the number of tests distributed, rather than the number of tests performed. This is not made clear from the dashboard itself. However, the figures observed at this dashboard on 11 May correspond to those provided in a Ministry of Health press release on 12 May which explicitly describes the figure as referring to the number of tests distributed.

The last press release that we have been able to find a clear estimate for the number of tests performed was made on 22 April (the figures relate to 20 April). No such figures have been found in subsequent press releases.

Bulgaria

→ View the country profile of Bulgaria for the coronavirus pandemic.

Source: Bulgaria COVID-19 Information Portal
Short description: The number of tests performed.

Latest estimate: 0.2 daily tests per thousand people (as of 30 May 2020).

Detailed description:

Bulgaria’s official COVID-19 information portal provides irregular updates of the cumulative number of ‘tests done’.

Using web archives we reconstruct the testing time series starting from 11th April. We cannot say with certainty when testing began, only that the earliest observation available to us begins from the 11th April. For 19th April, we take the figure provided in Bulgaria’s COVID-19 dashboard as no snapshot was available using web archives. The test figures provided in the dashboard match the figures provided by the information portal for all other dates available.

Google Translate was used while compiling this data so this may affect our interpretation of the data.

Canada

→ View the country profile of Canada for the coronavirus pandemic.

Source: Government of Canada
Short description: The number of people tested.

Latest estimate: 1 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Government of Canada provides daily updates of the COVID-19 outbreak here, which report the cumulative number of people tested to date.

We construct a daily time series of the cumulative number of people tested to date using Web Archive snapshots of these daily updates. The figures include positive and negative test results, while excluding pending test results.

The figures relate to diagnostic testing completed in laboratories.

We only report data since March 18th 2020 due to a large jump in the time series that occurred between March 17th (1,018 people tested) and March 18th (53,975 people tested). We suspect this jump was the result of a backlog in tests waiting to be processed, but the Government of Canada website does not provide an explanation. For comparability over time, we therefore exclude data prior to March 18th 2020.

Chile

→ View the country profile of Chile for the coronavirus pandemic.

Source: Government of Chile Coronavirus information page
Short description: The number of tests performed

Latest estimate: 0.88 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Government of Chile release daily reports that include cumulative and daily totals for the number of PCR tests performed across private and public medical establishments. This data is collected by volunteers and published on GitHub. We take our figures from this GitHub, which we regularly audit for accuracy.

Colombia

→ View the country profile of Colombia for the coronavirus pandemic.

Source: National Institute of Health
Short description: The number of samples processed.

Latest estimate: 0.21 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Colombian National Institute of Health publishes a dashboard on COVID-19, updated daily. Page 4 of the embedded report includes a graph on “histórico de muestras” (sample history), with a cumulative number of “muestras procesadas” (samples processed).

The report says that “the daily sample chart is based on information loaded by all laboratories that perform SARS-CoV2 diagnostics. At this time, some laboratories are completing the dates for conducting the tests, so the graph will vary as these data are completed.”

Because of this, our time series does not include samples marked as “S.F.” (“Sin Fecha”) in the leftmost bar of the graph; these can represent a high number of samples (3867 as of 21 April 2020).

Costa Rica

→ View the country profile of Costa Rica for the coronavirus pandemic.

Source: Costa Rican Ministry of Health
Short description: The number of people tested.

Latest estimate: 0.11 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Costa Rican Ministry of Health produce daily update reports of confirmed cases, deaths and test results.

These daily reports state the daily number of people who have been tested – given as the number of confirmed cases (‘Confirma contagio’) and number of people with negative results (‘Descarta contagio’) (thus the figures do not include pending tests). We can use these daily updates to construct a full time-series. This has been made downloadable.

Daily reports with figures on testing are only available dating back to 11th March. We therefore do not know the first date of testing, or daily figures prior to this date.

Croatia

→ View the country profile of Croatia for the coronavirus pandemic.

Source: Government of Croatia
Short description: Testing figures were reported as “samples tested” prior to 24 March 2020, then as “tests performed”, then as “people tested” from 6 May 2020.

Latest estimate: 0.16 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Government of Croatia provides daily updates of confirmed cases, deaths, and testing figures here. It is unclear whether the reported figures include tests for which the results are pending.

Data may not be fully comparable over time. Prior to March 24th, testing figures were reported in terms of “samples tested” (e.g. “Ukupno je 317 testiranih uzoraka…”). From March 24th to May 6th, testing figures were reported in terms of “tests performed” (e.g. “Dosad je obavljeno ukupno 3.159 testiranja”). Since May 6th they have been reported in terms of “people tested” (e.g. “Dosad je testirano ukupno 41.053 osoba”) It is unclear whether this change in wording reflects an actual change in which figures are reported.

We have found testing data dating back to March 3rd 2020, at which point 247 samples had been tested to date. It is not clear when the first sample was tested.

Cuba

→ View the country profile of Cuba for the coronavirus pandemic.

Source: Ministry of Public Health
Short description: Units are unclear, and could refer to the number of tests performed, or people tested.

Latest estimate: 0.18 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Ministry of Public Health publishes data on its website, which is collected and republished by the COVID-19 Cuba Data project in a dashboard and on GitHub. It includes a time series for the number of tests.

However the context in which the figures are published suggests that these numbers may actually refer to the number of individuals tested. A breakdown into positive and negative results is given, along with a positive test rate. It is also unclear whether the reported figures include tests for which the results are pending.

Czech Republic

→ View the country profile of Czech Republic for the coronavirus pandemic.

Source: Ministry of Health
Short description: The number of tests performed.

Latest estimate: 0.51 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Ministry of Health publishes a data set containing incremental and cumulative daily numbers of COVID-19 tests performed according to laboratory reports. It is updated daily and accessible in CSV and JSON format. No other information about the figures could be found.

Denmark

→ View the country profile of Denmark for the coronavirus pandemic.

Source: Danish Health Authority
Short description: The number of people tested.

Latest estimate: 3.46 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Danish Statum Serum Institute provides epidemiological update reports on confirmed cases, deaths, testing and demographic details of each up until 19th May. From 20 May, the Danish Statum Serum Institute reports testing figures via the Monitoring of COVID-19 page.

It provides daily statistics on the number of people tested for COVID-19 and the number of samples tested.

The most recent epidemiological status reports provided the daily data for the previous two weeks. We construct a longer time series by referring to earlier versions of this table, accessed via web archive. Note the cumulative total start date differs at various points in the time series. From 17/03-03/04 the cumulative total begins from 27 Jan; 04/04-20/04 from 7 Jan; and 21/04-today from 13 Jan.

The daily data for earlier dates can also be seen in a chart that the Institute show in their monitoring reports page. From 15 May, the Danish Statum Serum Institute provides figures on both people and samples tested.

There is no explicit mention of whether the figures include only PCR tests or other kinds of test.

Google Translate was used while compiling this data so this may affect our interpretation of the data.

Ecuador

→ View the country profile of Ecuador for the coronavirus pandemic.

Source: Government of Ecuador
Short description: Units unclear.

Detailed description:

The Government of Ecuador publish daily updates in the form of situation reports and summary infographics. These report the number and status of confirmed cases, deaths and number of samples tested. This data is available daily from 18th March; reports and infographics prior to this date do not include the number of samples tested. But all figures are dated cumulative since 29th February.

The source reports the number of confirmed (‘confirmados’) and negative (‘descartados’) cases, which we sum to get the number of cases tested.

On 24 April 2020, the number of tests suddenly jumped from 23,383 to 45,857, because of what we assume to be the inclusion of rapid tests (“pruebas rápidas”), as made clear by the subsequent infographic published on 27 April. We therefore do not include the 24 April infographic in our time series; and from 27 April onwards, we include only PCR tests.

On 11 May 2020, the Government of Ecuador published a report detailing “a reclassification of the records by identity card of the persons and not by the number of tests that have been carried out” (via google translate). This suggests the government is moving towards reporting figures on the number of people tested, where previously they reported the number of cases tested. The reclassification partially explains the fall in the cumulative total after 4 May 2020.

The most recently published situation report is dated 24th May, as of 26th May.

El Salvador

→ View the country profile of El Salvador for the coronavirus pandemic.

Source: Government of El Salvador
Short description: The number of tests performed.

Latest estimate: 0.37 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The government of El Salvador publishes an online dashboard that reports the number of tests performed (“pruebas COVID19 realizadas hasta hoy”). No information is given on the geographical scope and number of labs included.

The official dashboard only provides a daily snapshot of the number of tests performed today, making it difficult to construct a historical time series. We construct a daily time series dating back to April 10th 2020 of the cumulative number of tests performed using data posted on President Nayib Bukele’s official Facebook page, which match the daily snapshot figures reported in the official dashboard.

Estonia

→ View the country profile of Estonia for the coronavirus pandemic.

Source: Social Ministry
Short description: The number of tests performed (“Testide koguarv”)

Latest estimate: 0.78 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Social Ministry embeds the Koroonakaart dashboard maintained by Open Data Estonia. The Ministry notes that past data may be revised. No other descriptions can be found.

A complete time-series from 25th February is available, and is updated daily.

Ethiopia

→ View the country profile of Ethiopia for the coronavirus pandemic.

Source: Ethiopian Public Health Institute
Short description: The number of tests performed.

Latest estimate: 0.04 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Ethiopian Public Health Institute in collaboration with the Ethiopian Ministry of Health provides daily press releases of the number of tests performed to date. It is not clear whether these figures refer to the number of samples tested or the number of people tested. It is also unclear whether the reported figures include tests for which the results are pending.

The earliest record we have found is for March 17th 2020, at which point 79 tests had been performed to date. It is unclear when the first test was performed.

Finland

→ View the country profile of Finland for the coronavirus pandemic.

Source: Finnish Department of Health and Welfare COVID-19 data dashboard
Short description: The number of samples tested.

Latest estimate: 0.13 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Finnish Department of Health and Welfare publishes a dashboard of confirmed cases, deaths and samples tested.

The dashboard provides daily figures and cumulative test numbers on a separate tab. We have copied this time-series as presented in the original source. It’s important to note that when figures exceed 1000, the Finnish Department of Health and Welfare report samples to the nearest hundred (e.g. 1.6k).

Further descriptions of the testing data are provided here. In this document it notes that:

– “Public and private sector laboratories report to THL (health authority) the number of samples tested per hospital district”
– “The actual number of infections in Finland is probably higher than reported, as not all mild symptoms have been tested so far and no information is available on the number of asymptomatic infections.”
– “Coronavirus testing is performed in both the public and private sectors in several laboratories.”

The data description notes that tests are being rationed and allocated according to the following strategy: “Samples are taken primarily from patients with severe symptoms of respiratory infection and from health and social care staff to ensure staff health and labor adequacy….Attention has also been paid to vulnerable groups of patients with some underlying disease and to those over 70 years of age.”

This data series extends to the 30th January, when test figures were very low (73 tests per day). It is likely this is was the first day, or close to the first day of testing.

France

→ View the country profile of France for the coronavirus pandemic.

Source #1: National Public Health Agency
Short description: The number of people tested.

Latest estimate: 0.48 daily tests per thousand people (as of 24 May 2020).

Detailed description:

Since 29 May 2020, the National Public Health Agency has replaced its previous weekly updates of the number of tests performed (not updated since 5 May) with the weekly count of people tested.

For the week between 18 May and 24 May, the report states that 216,891 people were tested. This data does not allow us to publish any cumulative total, since no data is available on how many people had been tested prior to 18 May. However, we integrate this data into our “daily tests” time series by dividing 216,891 by 7 days, therefore estimating the daily number of people tested to be 30,984 on average for that week.

Source #2: National Public Health Agency
Short description: The number of tests performed.

Detailed description:

The National Public Health Agency published updates for the number of tests performed until early May. The figures in the time series relate to tests performed since 24 February. Since the 24 March update, in addition to the previously reported hospital tests, laboratory tests are also reported. Only the total number of laboratory tests performed between 24 February and 24 March is presented, without a time series. Our figure for 24 March adds the cumulative number of laboratory tests since 24 February (6,500) to the hospital tests figure (101,046). As such 24 March represents a break in the series.

The report dated 21 May specified a new screening information system (SI-DEP) had been deployed from week 20 (11-17 May) and that epidemiological trends and test positivity rates would be available from 28 May. The report published in late May reported the number of people tested insteaf of the number of tests performed, we therefore created a second time series for France.

Germany

→ View the country profile of Germany for the coronavirus pandemic.

Source: Robert Koch Institut
Short description: The number of tests performed. Note that the number of laboratories reporting in the data seems to vary from week to week.

Detailed description:

To determine how many laboratory tests regarding SARS-CoV-2 are carried out per calendar week in Germany and how many tests are positive or negative, the RKI has started a Germany-wide laboratory query. However, the number of laboratories reporting data seems to vary from week to week.

The report published on 27 May states that “from the beginning of the collection up to and including calendar week 21/2020”:
– The cumulative total of samples tested was 3,952,971;
– For calendar week 21( which ends 24 May), 172 labs reported 344,782 samples tested;
– For calendar week 20 (which ends 17 May), 181 labs reported 430,882 samples tested;
– For calendar week 19 (which ends 10 May), 182 labs reported 403,875 samples tested;
– For calendar week 18 (which ends on 3 May), 175 labs reported 326,788 samples tested;
– For calendar week 17 (which ends on 26 April), 178 labs reported 363,890 samples tested;
– For calendar week 16 (which ends on 19 April), 168 labs reported 331,902 samples tested;
– For calendar week 15 (which ends on 12 April), 164 labs reported 380,197 samples tested;
– For calendar week 14 (which ends on 5 April), 154 labs reported 408,348 samples tested;
– For calendar week 13 (which ends on 29 March), 151 labs reported 361,515 samples tested;
– For calendar week 12 (which ends on 22 March), 152 labs reported 348,619 samples tested;
– For calendar week 11 (which ends on 15 March), 114 labs reported 127,457 samples tested.
– Up to and including calendar week 10 (which ends on 8 March), 90 labs reported 124,716 samples tested.

By subtracting each weekly change from the cumulative total, we retrospectively work out the cumulative totals by the end of each week.

Since laboratories can post-check the tests of past calendar weeks in the RKI test number query, previous figures may be revised upwards slightly in subsequent reports. The source is explicit that these figures refer to tests performed and that this will not equal the number of people tested, because of multiple tests per person.

Ghana

→ View the country profile of Ghana for the coronavirus pandemic.

Source #1: Outbreak Response Management
Short description: The units are unclear. Some press releases mention “people tested”, while others give figures for “samples tested”.

Latest estimate: 0.08 daily tests per thousand people (as of 26 May 2020).

Detailed description:

Outbreak Response Management provides daily situation updates on the total number of people *or* total samples tested for the coronavirus.

Using web archives, we reconstruct a time series. From 17 March 2020 to 8 May 2020, situation updates sometimes reported the total number of people tested, and other times the total number of samples tested. We are not certain what the true units were during that period.

From 10 May 2020, the total number of tests and total persons tested figures are reported separately. The situation update for 27 May does not report the number of people tested.

Source #2: Outbreak Response Management
Short description: The units are unclear. Some press releases mention “people tested”, while others give figures for “samples tested”.

Latest estimate: 0.08 daily tests per thousand people (as of 27 May 2020).

Detailed description:

Outbreak Response Management provides daily situation updates on the total number of people *or* total samples tested for the coronavirus.

Using web archives, we reconstruct a time series. From 17 March 2020 to 8 May 2020, situation updates sometimes reported the total number of people tested, and other times the total number of samples tested. We are not certain what the true units were during that period.

From 10 May 2020, the total number of tests and total persons tested figures are reported separately. The situation update for 27 May does not report the number of people tested.

Greece

→ View the country profile of Greece for the coronavirus pandemic.

Source: The National Organization of Public Health
Short description: The number of people tested.

Latest estimate: 0.33 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Greek National Organization of Public Health publishes daily COVID-19 reports on confirmed cases, deaths and samples tested.

The report refers to its testing data as the number of people who have tested positive and negative since January 1: this means figures represent the number of people tested, excluding those pending results.

More recent reports are explicit that the figures relate to samples tested rather than the number of people: The note mentioned that the figures are “including more than one sample per person tested” (“συμπεριλαμβάνονται και περισσότερα από ένα δείγματα ανά άτομο που ελέγχθηκε”).

It is not totally explicit whether the figures cover all testing in Greece: the figures are labelled as “Samples that have been tested in the laboratories cooperating with EODY” (“Δείγματα που έχουν ελεγχθεί στα συνεργαζόμενα με τον ΕΟΔΥ εργαστήρια”).

The official website provides a list of daily reports. Unfortunately many reports are missing meaning a full daily time-series cannot be constructed. It is unclear how far back testing extends; the earliest available report is on 20th March when 7172 people had been tested.

Hong Kong

→ View the country profile of Hong Kong for the coronavirus pandemic.

Source: Centre for Health Protection, Department of Health
Short description: The number of tests performed.

Detailed description:

The Hong Kong Centre for Health Protection, Department of Health provides monthly numbers of the COVID-19 viral tests performed. We calculate the cumulative number of tests performed each month in our series. The last update with provisional data is up until 14th April 2020, this information is updated once a week by the Centre for Health Protection.

Tests performed are conducted by the Public Health Laboratory Services Branch of the Department of Health and Hospital Authority. We are not aware of any aggregation issues.

The cumulative total begins from 01/01/2020.

Hungary

→ View the country profile of Hungary for the coronavirus pandemic.

Source: Government of Hungary
Short description: The number of samples tested in an accredited laboratory.

Latest estimate: 0.35 daily tests per thousand people (as of 30 May 2020).

Detailed description:

A figure for the ‘number of samples tested in an accredited laboratory’ (“akkreditált laboratóriumban vizsgált minták száma”) is provided in a graphic in the govenrment’s coronavirus information website. No other information about the data is provided.

We use these official data as collected by the visual and data journalism team of Budapest-based investigative center Atlatszo, made accessible in a public spreadsheet. We have cross-checked a sample of the figures in this unofficial spreadsheet against official figures.

Iceland

→ View the country profile of Iceland for the coronavirus pandemic.

Source: Office of the Director of Public Health
Short description: The number of samples (“Fjöldi sýna”).

Latest estimate: 1.56 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Icelandic Office of Public Health publishes a complete time-series of daily samples (“Fjöldi sýna”). This time-series is broken down into two labs where these samples are tested. No other information is provided. It is not clear whether these figures include samples that are pending test results.

The daily time-series data only extends back to 27th February. However, the source shows clearly via annotation on the testing chart that between 1st and 26th February, 41 samples had been tested. We do therefore not know the days across which these samples were taken, only that as of 26th February, the total cumulative number of samples tested was 41.

India

→ View the country profile of India for the coronavirus pandemic.

Source #1: Indian Council of Medical Research
Short description: The number of people tested.

Latest estimate: 0.03 daily tests per thousand people (as of 24 April 2020).

Detailed description:

The ICMR reports separate figures for both “samples tested” and “people tested” at press conferences and in press releases (shown separately in the charts above). No other details are provided.

The press releases from ICMR do not always stay online for very long. The reason for this is unknown, but the releases are being backed up at this GitHub repository.

On some occasions there appear to have been more than one update released per day. Where we are aware of multiple observations for the day, we show the number for the earlier release.

Source #2: Indian Council of Medical Research
Short description: The number of samples tested.

Latest estimate: 0.09 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The ICMR reports separate figures for both “samples tested” and “people tested” at press conferences and in press releases (shown separately in the charts above). No other details are provided.

The press releases from ICMR do not always stay online for very long. The reason for this is unknown, but the releases are being backed up at this GitHub repository.

On some occasions there appear to have been more than one update released per day. Where we are aware of multiple observations for the day, we show the number for the earlier release.

Indonesia

→ View the country profile of Indonesia for the coronavirus pandemic.

Source: Emerging infections, Indonesian Ministry of Health
Short description: The number of cases tested.

Latest estimate: 0.04 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Indonesian Ministry of Health updates its COVID-19 dashboard twice a day but doesn’t keep time series of past data. The two URLs (1, 2) seem to lead to the exact same dashboard.

The dashboard shows the latest number of “Kasus dg Spesimen Diperiksa”, which translates to “Cases with Specimens Checked”.

We found past values using Internet Archive’s Wayback Machine.

Iran

→ View the country profile of Iran for the coronavirus pandemic.

Source: Government of Iran
Short description: The number of tests performed.

Detailed description:

The Government of Iran provides daily press releases of the cumulative number of tests performed to date. It is not clear whether the reported figures refer to the number of samples tested or number of people tested. It is also unclear whether the reported figures include tests for which the results are pending.

We have found testing data dating back to April 5th 2020, at which point 189,790 tests had been conducted to date. It is not clear when the first test was conducted.

Ireland

→ View the country profile of Ireland for the coronavirus pandemic.

Source: Department of Health
Short description: The units are unclear. Some press releases mention “tests carried out”, while others give figures for “people tested”.

Detailed description:

The Irish Department of Health publishes daily press releases, which sometimes (about once a week) include an updated cumulative total for national tests.

The 10 March release was unclear as to the units: It states both that “1,784 people have been tested” and that “There have been 1,784 suspected cases tested in Ireland, to date – an increase of 1,387 tests in one week.” Subsequent releases refer to “tests carried out”. Overall it remains unclear whether the figures relate to people tested or the number of tests performed.

Occassionally, the press release states that these figures relate to tests “carried out in laboratories across the country”.
No other details about what the numbers refer to are known.

Israel

→ View the country profile of Israel for the coronavirus pandemic.

Source: Ministry of Health
Short description: The number of tests performed.

Latest estimate: 0.69 daily tests per thousand people (as of 20 May 2020).

Detailed description:

The Israel Ministry of Health publishes a coronavirus dashboard on its website. It includes a downloadable data file which includes the cumulative number of coronavirus detection tests conducted. This data file is updated daily and includes data up to one week after publication.

The first observation in the time series is from 26th January which covers most, if not all, of the relevant period.

No further information on the geographical scope, number of labs, or types of test included are known.

The MOH also publishes COVID-19 updates on its official channel on Telegram. However, this data is published in a format that is extremely challenging to collect. We previously relied on the data collected and made available on GitHub. On 19 April 2020, the person who maintains the GitHub repository confirmed to us that the units refer to the number of tests performed, after checking the information with the Ministry of Health. However, on 29 May we became aware of the easily accessible Israel MOH series which we now report.

Italy

→ View the country profile of Italy for the coronavirus pandemic.

Source #1: Ministero della Salute
Short description: The number of people tested.

Latest estimate: 0.6 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The official data provided by the Ministry of Health is compiled by the Department of Civil Protection on GitHub. Figures relate to the total number of people tested. This figure is available for each individual region separately at the source indicated. However it appears that data is missing for individual regions for particular dates – we assume that these are also missing from the aggregate total for Italy that we provide. The list of missing data, in English, can be seen at the bottom of this data dashboard built by Franco Mossotto.

It is clear that there are delays in timeline running up to a test being reported – both in terms of the time it takes for a symptomatic person to receive a test, and in the time for that test to then get reported in the data. For one region, Lombardy, an investigation found the latter delay to be around 3-4 days.

There is significant variation in testing practices – in terms of how many tests are conducted and how they are allocated across the population – across regions and these practices have also changed over time. The extent to which tests pending results are included appears to vary across regions.

Pietro Monticone and Riccardo Valperga have written a very helpful and detailed description of these data quality issues here in GitHub.

Source #2: Ministero della Salute
Short description: The number of tests performed.

Latest estimate: 1.15 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The official data provided by the Ministry of Health is compiled by the Department of Civil Protection on GitHub. Figures relate to the total number of tests performed. This figure is available for each individual region separately at the source indicated. However it appears that data is missing for individual regions for particular dates – we assume that these are also missing from the aggregate total for Italy that we provide. The list of missing data, in English, can be seen at the bottom of this data dashboard built by Franco Mossotto.

It is clear that there are delays in timeline running up to a test being reported – both in terms of the time it takes for a symptomatic person to receive a test, and in the time for that test to then get reported in the data. For one region, Lombardy, an investigation found the latter delay to be around 3-4 days.

There is significant variation in testing practices – in terms of how many tests are conducted and how they are allocated across the population – across regions and these practices have also changed over time. The extent to which tests pending results are included appears to vary across regions.

Pietro Monticone and Riccardo Valperga have written a very helpful and detailed description of these data quality issues here in GitHub.

Japan

→ View the country profile of Japan for the coronavirus pandemic.

Source #1: Ministry of Health, Labor and Welfare
Short description: The number of people tested.

Detailed description:

The Ministry of Health, Labor and Welfare issues daily reports for the total number of people tested. Daily changes in the number of people tested are included in parentheses. For the 3rd and 21st April, the daily changes do not reconcile with the cumulative totals. Moreover, it is clear that revisions to past data are simply added to the new cumulative total, making the time series of ‘daily tests’ too erratic to be published.

This includes two cases where the cumulative number of people tested falls: (1) 19/03 and (2) 25/03. For case (1) see footnote 4 which indicates a past mistake has been noticed and the cumulative figure revised on the date to adjust for this. For case (2), we could not find the associated footnote.

It isn’t clear what exact date these cumulative tests date back to, but it is earlier than 10 Feb when the source reports 938 people had been tested. Prior to the 10 Feb, the press releases provide reports of coronavirus infections for the Diamond Princess cruise ship quarantined in Yokohama port. We do not report these numbers in the time series as it is unclear how they relate to the cumulative totals.

Google translate was used while compiling this data so this may affect our interpretation of the data.

Source #2: Ministry of Health, Labor and Welfare
Short description: The number of tests performed.

Latest estimate: 0.05 daily tests per thousand people (as of 27 May 2020).

Detailed description:

On 11th April 2020, the MOH started providing a daily time series on the “Implementation status of PCR tests for new coronavirus in Japan (based on the date on which results were determined” (via Google translate).

With each update, some daily totals are revised from earlier releases of the time series.

From 20th May, the MOH changed how it reports the number of tests performed. From 18th February to 25th March (as of 20/05/2020), the MOH reports the number of tests implemented each week, and the daily totals thereafter. We calculate the cumulative total from the weekly and daily figures. There are instances where the cumulative totals reported in the press releases do not sum to the cumulative total calculated from the weekly and daily figures. This includes the series released on 20/21 and 24/25 May. The source does not provide additional details about this discrepancy.

Google translate was used while compiling this data so this may affect our interpretation of the data.

Kazakhstan

→ View the country profile of Kazakhstan for the coronavirus pandemic.

Source: Kazakhstan National Center for Public Health
Short description: The number of tests performed.

Latest estimate: 1.41 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Kazakhstan National Center for Public Health provides an official time series of the total number of tests performed to date. It is unclear whether the reported figures include tests for which the results are pending.

The website explicitly states that “one person could be tested several times”, indicating that the number of tests performed (“Проведено тестов”) is not equivalent to the number of people tested.

The earliest reported figure is from March 13th 2020, at which point 126 tests had been conducted. It is unclear whether March 13th was the first date on which tests were conducted.

Kenya

→ View the country profile of Kenya for the coronavirus pandemic.

Source: Ministry of Health
Short description: Units are unclear, and could refer to the number of samples tested, or people tested.

Latest estimate: 0.07 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Kenya Ministry of Health provides daily press releases and tweets (@MOH_Kenya), sometimes reporting the number of tests conducted in the past 24 hours and sometimes reporting the total number of tests conducted to date.

It is not clear whether the reported figures refer to the number of samples tested or number of people tested, since the press releases and tweets variably use the terminology “samples tested”, “tests conducted”, and “people tested” at different points in time. It is also unclear whether the reported figures include tests for which the results are pending.

We have found testing data dating back to March 6th 2020, at which point 31 tests had been conducted to date. It is not clear when the first test was conducted.

Latvia

→ View the country profile of Latvia for the coronavirus pandemic.

Source: Center for Disease Prevention and Control
Short description: The number of tests performed.

Latest estimate: 0.66 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Center for Disease Prevention and Control publishes the number of laboratory tests performed to detect SARS-CoV-2 virus (“Veikto laboratorisko testu skaits, lai noteiktu SARS-CoV-2 vīrusu”) on the Latvian Government’s Open Data Portal. No information is given on the geographical scope and number of labs included.

Lithuania

→ View the country profile of Lithuania for the coronavirus pandemic.

Source: Ministry of Health
Short description: The number of samples tested.

Latest estimate: 2.24 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Ministry of Health provides fairly regular updates of the number of samples that have been analyzed/tested for suspected coronavirus, to date (“Iki šiol iš viso ištirta ėminių dėl įtariamo koronaviruso”). The figures are broken down by. A time series is not available. As such it is not clear the exact date these cumulative figures date back to.

The figures exclude samples that remain untested (i.e. tests pending results).

Luxembourg

→ View the country profile of Luxembourg for the coronavirus pandemic.

Source: Luxembourg Government situation update
Short description: The number of tests performed.

Latest estimate: 2.19 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Luxembourg government provides a daily situation update listing the ‘number of persons tested since the beginning of the crisis’.

Using web archives, we construct a time series by looking at earlier snapshots of the website. Gaps in the series are due to the lack of archived pages for those particular dates. Archives dating back to April 1st are available.

Earlier updates listed their figures as ‘tests carried out’. Given that there is no visible break in the series, we assume that the figures have always related to the number of people tested and the change in label reflects only a clarification of this.

In the FAQs beneath the figures, the website states that “Only a test on respiratory secretions is currently available to detect the presence of the new coronavirus.”

Malaysia

→ View the country profile of Malaysia for the coronavirus pandemic.

Source: Ministry of Health
Short description: The number of people tested.

Detailed description:

The Malaysian Ministry of Health provides daily situation updates, including the cumulative number of individuals sampled, available from 19th May. This figure can be found in the infographic titled ‘Jumlah Keseluruhan Taburan Kes COVID-19 di Malaysia’ labelled as ‘Jumlah Individu Disampel’. Since 19th April 2020, we are not aware of the source reporting positive, negative, and pending test figures separately, as was the case before.

The situation updates for 27/28 May does not include the infographic detailing the total number of people tested.

Prior to 19th May, we relied on MOH web archives to reconstruct the time series. The MOH provided daily updates to the total number of cases tested. It is not clear the exact date these cumulative figures date back to. The earliest release we have been able to find begins from the 14th February. This MOH web archive provides a breakdown of the number of positive, negative, and still pending tests. We report total tests as the sum of positive and negative tests, excluding pending tests. The title of the table indicates that these figures relate to cases. As far as we are aware, cases are equivalent to individuals tested.

In a previous version of this page, we reported total tests as the sum of positive, negative, and pending tests. However, since April 7th 2020, the source has not reported the number of pending tests each day. For this reason, we have updated the time series so that total tests is equal to the sum of positive and negative tests (excluding pending tests) for all days on which we report data.

There is no explicit mention of whether the figures include only PCR tests or other kinds of test.

Maldives

→ View the country profile of Maldives for the coronavirus pandemic.

Source: Maldives Ministry of Health Official Facebook page
Short description: The number of samples tested.

Latest estimate: 1.47 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Maldives Ministry of Health posts almost-daily video updates (there are some missing days) to their official Facebook page. Toward the end of these videos they report “Laboratory Sample” numbers for positive, negative, pending, and total. The positive, negative, and total numbers are cumulative, while the pending numbers are current as of that day. We report here the total of positive and negative numbers rather than the reported total numbers, as those inconsistently include pending values and occasionally contain discrepant numbers that do not match any combination of the positive, negative, or pending numbers. It is not clear when testing first began; data is only available from 16th March where it was reported that 221 tests had been conducted.

Mexico

→ View the country profile of Mexico for the coronavirus pandemic.

Source: Health Secretary
Short description: The number of cases tested.

Latest estimate: 0 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Mexican Health Secretary publishes a dataset on datos.gob.mx, the open data platform of the Mexican government.

The file can be downloaded in CSV format, and gives detailed information on each case (1 row per case). The RESULTADO column gives the status of the case, with 1 = CONFIRMED and 2 = NEGATIVE. The resulting tally can also be found on the government’s COVID-19 dashboard.

While geographical coverage is complete, there is a time lag in the publication of the data, and recent days systematically show temporary low figures. Data starts on 1 January 2020; we do now know if this is because tests started on that date or because earlier data is not available.

The notes to the data provide the following note “Information from the Epidemiological Surveillance System for Viral Respiratory Diseases, reported by the 475 viral respiratory disease monitoring units (USMER) throughout the country in the entire health sector (IMSS, ISSSTE, SEDENA, SEMAR, ETC)…. Preliminary data subject to validation by the Ministry of Health through the General Directorate of Epidemiology. The information contained corresponds only to the data obtained from the epidemiological study of a suspected case of viral respiratory disease at the time it is identified in the medical units of the Health Sector”. (via Google translate)

Morocco

→ View the country profile of Morocco for the coronavirus pandemic.

Source: Morocco Ministry of Health
Short description: The number of cases tested.

Latest estimate: 0.15 daily tests per thousand people (as of 18 May 2020).

Detailed description:

The Morocco Ministry of Health provides daily updates of the total number of confirmed cases and the number of cases dismissed following a negative test result. We construct a time series of the cumulative number of cases tested to date using the data stored in this unofficial GitHub repository, supplemented by official updates from the Ministry of Health’s twitter page (@Ministere_Sante). We have cross-checked a sample of the figures reported in the unofficial source against official data reported by the Ministry of Health.

The cumulative number of cases tested to date includes positive and negative test results, while excluding pending results. The earliest reported figure is from February 7th 2020, at which point 9 cases had been tested.

Myanmar

→ View the country profile of Myanmar for the coronavirus pandemic.

Source: Myanmar Ministry of Health and Sports
Short description: The number of samples tested.

Latest estimate: 0.02 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Myanmar Ministry of Health and Sports provides a daily snapshot of the total number of specimens tested to date. These figures include positive and negative test results, but exclude pending results.

The earliest reported figure that we have been able to find on the ministry website is from April 3rd 2020, at which point 1183 specimens had been tested.

Nepal

→ View the country profile of Nepal for the coronavirus pandemic.

Source: Ministry of Health and Population
Short description: The number of people tested.

Latest estimate: 0.11 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Ministry of Health and Population publishes daily reports on COVID-19, including a table with the number of people tested in each lab. It also differentiates between positive tests, negative tests, and tests pending, allowing to remove pending tests from the total.

We collect the data directly from this GitHub repository.

According to the reports, including the National Public Health Laboratory in Teku, the COVID-19 lab test through PCR is available in 13 institutions across the country with a minimum of one lab in each province.

Netherlands

→ View the country profile of Netherlands for the coronavirus pandemic.

Source: Dutch National Institute for Public Health and the Environment
Short description: The number of people tested.

Latest estimate: 0.24 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Dutch National Institute for Public Health and the Environment releases daily epidemiological reports of the COVID-19 situation. The reports contain a weekly time series of the number of persons tested per week since March 9th 2020. The reports also include the number of persons tested per day in the current week.

There appear to be reporting lags, such that the number of labs reporting for days in the current week tend to be lower than for the previous week. As a result, the reported figures are updated retrospectively as additional labs report their results. The figures we display are based on the latest available epidemiological report.

The epidemiological reports state that ‘all laboratories in the Netherlands that perform diagnostics for SARS-CoV-2 have been asked from 9 March to report these data daily.’ However, the number of labs reporting in a given weekly figure has varied over the course of the reports, which may affect the consistency of the time series we present.

New Zealand

→ View the country profile of New Zealand for the coronavirus pandemic.

Source: New Zealand Ministry of Health
Short description: The number of tests performed.

Latest estimate: 0.63 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The New Zealand Ministry of Health provide a time series for tests per day and cumulative tests. The daily figures begin on 9 March, and the cumulative figures date back to 22 January when testing began.

No further details about the data are available.

Nigeria

→ View the country profile of Nigeria for the coronavirus pandemic.

Source: Nigeria Centre for Disease Control
Short description: The number of samples tested.

Latest estimate: 0.04 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Nigeria Centre for Disease Control, on the homepage of the website dedicated to COVID-19, publishes a number of samples tested.

This table often displays figures in a format such as “> 7153”. When this is the case, we have taken the raw number (in our example 7153) as the cumulative total for that day.

No information is given on the geographical scope and number of labs included. It is also unclear whether the reported figures include tests for which the results are pending.

Norway

→ View the country profile of Norway for the coronavirus pandemic.

Source: Norwegian Institute of Public Health
Short description: The number of people tested

Latest estimate: 0.51 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Norwegian Institute of Public Health produce daily update reports of confirmed cases, deaths and test results. This information includes demographic information of confirmed cases.

These daily reports state the cumulative number of people who have been tested – including the number and share who tested positive. We can use these daily updates to construct a full time-series. Note that the source states that “Data for the last few days is incomplete and will be updated in upcoming daily reports”, that the “Number of tested and proportion of positive findings among the tested is affected by changes in test criteria”. It also notes that “Laboratory data is now retrieved from the new national laboratory database, which gives us [a] more complete data set with regard to sampling date”. Earlier reports noted that “The figure contains only numbers from laboratories that have reports that include the sampling date” [all via Google Translate]. As such, this seems to imply an increase in coverage across laboratories over time.

In addition to the aggregate number of people tested, the source provides a regional breakdown, in which it is noted that tests in ‘private labs that analyze tests across the country’ are excluded. The sum of this breakdown is lower than the aggregate figure provided. We take this as an indication that the main aggregate figure we report includes all private testing.

Daily reports with figures on testing are only available dating back to 16th March. We therefore do not know the first date of testing, only that as of 16th March, 18062 people had been tested.

The time of day to which the testing figures relate appears to have changed. Earlier daily reports refers to those tested up until 3pm (local time) of the previous day. More recent reports relate to those tested up until midnight (local time) of the previous day.

Pakistan

→ View the country profile of Pakistan for the coronavirus pandemic.

Source: Government of Pakistan
Short description: The number of tests performed.

Latest estimate: 0.05 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The government of Pakistan publishes a dashboard showing up-to-date national data.

The figures sometimes shows important 1-day increases due to the inclusion of more labs.

Panama

→ View the country profile of Panama for the coronavirus pandemic.

Source: Ministry of Health
Short description: Units are unclear, and could refer to the number of tests performed, or people tested.

Latest estimate: 0.3 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Panama Ministry of Health in collaboration with the Gorgas Memorial Institute for Health Studies reports the cumulative number of tests performed to date in this dashboard. The reported figures include the total number of positive, negative, and “positive control” test results to date.

It is unclear whether the total number of tests performed (“pruebas realizadas”) refers to the number of people tested or the number of samples tested. The number of reported positive test results is equal to the number of confirmed cases of COVID-19, which suggests that the number of tests performed is equivalent to the number of people tested. However, because the data source does not provide a clear definition, we record the units as “unclear”.

Unfortunately, the Ministry of Health’s official dashboard does not provide a time series of the number of tests performed each day since testing began. Instead, the dashboard only displays a daily snapshot of the total number of tests performed to date. Since we did not begin to monitor this dashboard until April 14th 2020, we construct a time series dating back to March 9th 2020 using data provided in this unofficial GitHub repository, which we have cross-referenced against data in the official Ministry of Health dashboard for a sample of dates.

Paraguay

→ View the country profile of Paraguay for the coronavirus pandemic.

Source: Paraguay Ministry of Public Health and Social Welfare
Short description: The number of samples tested.

Latest estimate: 0.13 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Paraguay Ministry of Public Health and Social Welfare provides press releases of the daily number of samples tested, alongside the number of these samples that tested positive. It is unclear whether these figures include samples for which the results are still pending.

The reported figures are cumulative from March 7th 2020, when the first case in Paraguay was confirmed.

Peru

→ View the country profile of Peru for the coronavirus pandemic.

Source: Ministry of Health, Government of Peru
Short description: The number of people tested.

Latest estimate: 0.11 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Peruvian Ministry of Health provides daily press releases of the cumulative number of positively and negatively tested people to date (‘Personas muestreadas’). As such, the series will not include tests pending results.

Note that earlier releases, such as that on the 6 March, referred to the figures as the number of samples processed (‘se han procesado 155 muestras por coronavirus COVID-19’). Given the continuity obsevered in the series however, it seems likely that the this change in the description reflects only a clarification, rather than actual change in methodology.

The date from which the cumulative number of tests is counted is not mentioned in the press releases. The earliest press release we are able to find is for March 4th, 2020, which reported 107 cumulative test results since an unmentioned date.

The releases provide figures for serology tests (“Pruebas serológicas rápidas”) as well as PCR tests (“Pruebas moleculares”). In order to provide the data that is most comparable to the other countries in our database, we only include PCR tests (“Pruebas moleculares”).

Philippines

→ View the country profile of Philippines for the coronavirus pandemic.

Source: Department of Health
Short description: The number of people tested.

Detailed description:

The Ministry of Health (MOH) provides a daily snapshot of testing capacity detailing the total number of individuals tested and the total number of tests conducted.

The total number of individuals tested is the sum of positive, negative, equivocal, and invalid individuals. No definitions of equivocal and invalid individual tests are given, hence our figures only report the sum of individuals who have tested positive or negative. From 22nd May, the DOH stopped reporting figures on equivocal and invalid individuals; the DOH provides the cumulative samples and unique indivdiuals tested, where cumulative unique individuals = cumulative positive + cumulative negative individuals.

The source provides a breakdown of both i) the number of individuals tested and ii) the total tests conducted, by laboratory. We are not aware of any aggregation issues.

The DOH used to report the number of cases tested in a previous dashboard, but stopped on 4th April. This previous breakdown of the test results and COVID-19 dashboard have both been removed. We became aware of this new tracker on the 13th April with data ‘as of April 11 2020, 12am’. No previous snapshots of the dashboard are available using web archive, therefore the series starts from the 11th April – the earliest date from which we have access to the data.

Poland

→ View the country profile of Poland for the coronavirus pandemic.

Source: Ministry of Health of the Republic of Poland
Short description: The number of samples tested.

Latest estimate: 0.68 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Polish Ministry of Health (@MZ_GOV_PL) tweets daily reports of the cumulative number of samples tested (“liczba przebadanych próbek”). The figures reported in these tweets are collected by an unofficial source, from which we take our figures, but regularly audit for accuracy.

The first date for which we have found data is March 3rd 2020, in which 559 cumulative samples were tested since an unknown date.

No other information about the figures is known.

Portugal

→ View the country profile of Portugal for the coronavirus pandemic.

Source: Portugal Ministry of Health dashboard
Short description: The number of samples processed

Latest estimate: 1.66 daily tests per thousand people (as of 27 May 2020).

Detailed description:

The dashboard provides figures for the number of samples processed, both as daily figures and as cumulative figure since the 1 March.

Up until 29 April we had reported a figure of the number of people tested, obtained as the sum of confirmed and unconfirmed cases in the Portugal Ministry of Health (MOH) daily updates. We were alerted by a Technical Advisor within the Cabinet of the Secretary of Health to the fact that these figures only captures people who were reported through the National System of Epidemiological Surveillance which does not include many of the people that get tested but are never entered into the surveillance system (because they do not meet the criteria and go on to test negatively). For this reason we have now switched to the current series. The advisor confirmed to us that this series: includes all the public, private and university labs performing SARS-CoV-2 diagnosis in Portugal; does not include tests pending results; includes only PCR tests.

Qatar

→ View the country profile of Qatar for the coronavirus pandemic.

Source: Qatar Ministry of Public Health
Short description: The number of people tested.

Latest estimate: 2.04 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Qatar Ministry of Public Health provides daily updates on its website of the cumulative number of people tested to date. It is not clear whether these figures include people for which test results are pending.

The earliest reported figure that we have been able to find is from March 14th 2020, at which point 6,788 tests had been conducted.

Romania

→ View the country profile of Romania for the coronavirus pandemic.

Source: Ministry of Internal Affairs
Short description: The number of tests performed.

Latest estimate: 0.6 daily tests per thousand people (as of 29 May 2020).

Detailed description:

Data is collected and made available on GitHub. It includes a cumulative total of tests performed. No information is given on the geographical scope and number of labs included.

The main data source is the press office of the Ministry of Internal Affairs, which provides a daily report on most metrics. Data points are also sourced from the Romanian Ministry of Health and the Romanian National Institute of Public Health and occasionally from news outlets.

Russia

→ View the country profile of Russia for the coronavirus pandemic.

Source: Government of the Russian Federation
Short description: The number of tests performed.

Latest estimate: 2.17 daily tests per thousand people (as of 30 May 2020).

Detailed description:

A dedicated website publishes a daily report giving the cumulative total of tests performed in Russia. No information is given on the geographical scope and number of labs included.

We didn’t include cumulative totals reported on 30th March and 31st March, as they seemed inconsistent with numbers given on 29th March and 1st April.

Our figures for the cumulative number of tests performed refer to tests performed up until the previous day. E.g. total tests for 17/04 daily report refer to test data up until 16/04.

Rwanda

→ View the country profile of Rwanda for the coronavirus pandemic.

Source: Rwanda Ministry of Health
Short description: The number of samples tested.

Latest estimate: 0.1 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Rwanda Ministry of Health (@RwandaHealth) tweets press releases in English, French, and Kinyarwanda that report the number of samples tested each day.

The earliest press release we have found containing testing figures is from April 7th 2020. Between April 7th 2020 and May 1st 2020 (inclusive), the press releases reported the number of samples tested today, but not the cumulative number of samples tested to date. Since May 2nd 2020, the press releases have reported the cumulative number of samples tested to date as well as the number of samples tested today. We construct a daily time series since April 6th 2020 of the cumulative number of samples tested to date by subtracting daily tests between April 7th – May 2nd from the May 2nd 2020 cumulative total.

As of April 6th 2020, 5,701 samples had been tested to date. It is unclear when the first samples were tested.

It is unclear whether the reported figures include tests for which the results are pending.

Prior to April 17th 2020, the press releases reported testing figures using the language “samples tested”. From April 17th onwards, the press releases have used the ambiguous language “tests today”. We assume that “tests today” still refers to the number of samples tested.

Saudi Arabia

→ View the country profile of Saudi Arabia for the coronavirus pandemic.

Source: Ministry of Health
Short description: Units are unclear, and could refer to the number of tests performed, or people tested.

Latest estimate: 0.48 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Saudi Arabian Ministry of Health provides a dashboard detailing the total number of tests. Whether units refer to people or tests conducted is unclear.

The exact date these cumulative figures date back to is also unknown.

There is no explicit mention of whether the figures include only PCR tests or other kinds of test.

Senegal

→ View the country profile of Senegal for the coronavirus pandemic.

Source: Ministry for Health and Social Action
Short description: The figures are labelled as the number of ‘tests performed’. Note that from other countries, we see that such a label can be consistent with figures relating to the number of individuals tested.

Latest estimate: 0.08 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Senegalese Ministry for Health and Social Action publishes daily press releases detailing the number of tests performed and the number of positive confirmed cases. It is not totally clear whether the number of tests performed is equivalent to the number of people tested. It is also unclear whether the reported figures include pending test results.

The daily press releases date back to February 28th 2020. We construct a daily time series of the number of tests performed using data contained in this unofficial github repository, which we have cross-checked against official data for a sample of dates.

Serbia

→ View the country profile of Serbia for the coronavirus pandemic.

Source: Ministry of Health
Short description: The number of people tested.

Latest estimate: 0.52 daily tests per thousand people (as of 30 May 2020).

Detailed description:

Reports are published daily by the Serbian Ministry of Health. The data is collected and aggregated by volunteers and published on GitHub. All labs in Serbia are included.

Singapore

→ View the country profile of Singapore for the coronavirus pandemic.

Source #1: Ministry of Health
Short description: The number of people tested.

Detailed description:

Singapore’s Ministry of Health has started reporting testing numbers since 10 April 2020. The dashboard gives a cumulative total of swabs tested, and unique persons tested.

No other information is given on how the data was collected and aggregated, and whether coverage was complete.

Source #2: Ministry of Health
Short description: The number of swabs tested.

Detailed description:

Singapore’s Ministry of Health has started reporting testing numbers since 10 April 2020. The dashboard gives a cumulative total of swabs tested, and unique persons tested.

No other information is given on how the data was collected and aggregated, and whether coverage was complete.

Slovakia

→ View the country profile of Slovakia for the coronavirus pandemic.

Source: National Center of Health Information and the Slovak Republic Government coronavirus information website
Short description: The number of completed laboratory tests.

Latest estimate: 0.63 daily tests per thousand people (as of 30 May 2020).

Detailed description:

Slovakia’s National Center of Health Information provides a dashboard with figures for ‘all tests performed’ (“Všetkých vykonaných testov”).

Using web archives, we construct a daily time series of total samples by looking at earlier snapshots of the website. These archives begin from the 15th March. We are unable to determine when testing began, only that on the 15th March a total of 1545 tests had been conducted. Earlier archives make it clear that the figures relate to the sum of positive and negative tests (i.e. tests pending results are not included).

We found the total number of negative and positive samples was identical for the 26/03 and 27/03. The reason for this is not clear. We include only the former date as an observation. From the 29/03 – 01/04 and 05/04 – 07/04 no web archives could be retreived.

From the 14th April, we became aware of a short term dashboard by the National Centre of Health and Information providing the same figures over the last 6 days. We have used this source to supplement testing data for the 10th April where web archives were not available. The notes to this dashboard provide further elaboration. They state that the figures relate to the “number of completed laboratory tests… The number contains all positive and negative results also retests of previously tested positive patients” (via Google translate).

Slovenia

→ View the country profile of Slovenia for the coronavirus pandemic.

Source: Slovenian Government coronavirus information page
Short description: The number of tests performed.

Latest estimate: 0.3 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Government information website provides figures for the number of tests completed (“Opravljeni testi”). A time series of both cumulative and daily tests is available to download. This date back to the 12 March, where 3863 tests are reported to have already been performed (it is not known from which date this first cumulative figure dates back to).

The same cumulative figure is published each day by the National Insitute for Public Health (NIJZ). Here they clarify that figures relate to the number of tests – including those for people who were tested several times.

A footnote states that the figures relate to “Laboratory tests performed as part of routine testing and the COVID-19 National Survey are included.” The later appears to refer to the prevalence study described on this Government page. The description of the study states that “The survey is being conducted on a random sample of 3,000 persons” and that people will be tested with both a PCR and a serological test.

The volunteer-led Sledilnik.org project also presents the official data in a helpful website.

South Africa

→ View the country profile of South Africa for the coronavirus pandemic.

Source: National Institute for Communicable Diseases (NICD)
Short description: The number of people tested.

Latest estimate: 0.37 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The South African National Institute for Communicable Diseases (NICD) publishes daily updates on the number of confirmed cases, deaths and tests conducted nationally and by province. These updates are published on its website and on its offical Twitter account (@nicd_sa).

The NICD reports the number of ‘tests conducted’ in addition to the number of ‘positive cases’ (and sometimes the number of ‘negative cases’). This is suggestive that ‘tests conducted’ refers to the number of people tested, but this was unclear from the available documentation until April 18th 2020. On April 18th, the official twitter account for the Department for Health clarified that repeat tests for COVID-19 are not counted and that the number ‘tests conducted’ refers to people tested.

The NICD began publishing daily updates on 7th February 2020, allowing us to develop a time series from this date forward. We do not know the first date of testing. As of 7th February, 42 people had been tested.

South Korea

→ View the country profile of South Korea for the coronavirus pandemic.

Source: South Korea CDC
Short description: The number of cases tested.

Latest estimate: 0.35 daily tests per thousand people (as of 30 May 2020).

Detailed description:

KCDC have provided daily updates in English since 21 January. The figures they provide relate to ‘cases’, where this signifies an individual considered eligible for testing due to their symptoms, travel history or contact history.

The figures shown below include those cases pending test results. The daily updates show the change each day and the current totals. These form a consistent chain all the way back to 21 January. The daily test figures we provide relate to the daily change in the number of tests with results. As such it includes both the number of tests performed in that day and the change in the stock of tests pending results.

We are not aware of any significant issues affecting comparisons over time.

Spain

→ View the country profile of Spain for the coronavirus pandemic.

Source: Ministerio de Sanidad, Consumo y Bienestar Social
Short description: The number of tests performed.

Detailed description:

Official data covering the whole of Spain was only published sporadically until the end of April 2020.

The first estimate in our time series comes from a Ministry of Health press release, quoting Salvador Illa, Minister of Health: “From the beginning of the crisis and until April 13, the total number of PCR carried out in Spain is 930,230.” The press release is here.

The second is another Ministry of Health press release published on 27 April and relating to testing conducted up to 23 April. It provides a breakdown across Autonomous Communities (regions), with a total for Spain of 1,035,522 PCR tests. The same release provides a figure of 310,038 antibody tests conducted nationwide. These are different to the PCR tests, as we discuss here. Our database aims to not include antibody tests. So in order to provide the data that is most comparable to the other countries in our database, we include only the PCR tests count for this observation.

One aspect of the 27 April press release that is not totally clear is whether the figures provided for each Autonomous Community relate to the 23 April. Comparing the regional breakdowns provided in the Ministry of Health release to those collected from official sources by CIVIO (as of 28 April) suggests that the figure of 203,892 provided for Madrid in the Ministry of Health update—ostensibly dating to the 23 April—may date back to 14 April.

Further data points are collected from the Ministry of Health’s press releases or its Twitter account.

CIVIO is a non-profit investigative data journalism organisation who are collating information on tests performed within each Autonomous Community, as released through official channels (communication offices, web pages, press releases and social networks of the different regions). We do not report these figures because their data are not complete: For some autonomous communities, figures are available only irregular intervals. The figures they provide are broadly in-line with those of the Ministry of Health releases, although with somewhat lower figures for some Autonomous Communities. This may be due to the Ministry of Health having access to more recent estimates for these Autonomous Communities.

Sweden

→ View the country profile of Sweden for the coronavirus pandemic.

Source: Public Health Agency
Short description: The number of people tested.

Detailed description:

The weekly report gives the cumulative total of individuals “analyzed for the virus that causes covid-19 in Sweden”, along with weekly totals.

By subtracting each weekly change from the cumulative total, we can retrospectively work out the cumulative totals by the end of each week.

Figures are often rounded off to the nearest hundred, indicating that they might not be extremely precise. The report does not indicate whether pending tests are included in the counts.

A note is provided at the same website indicating that the testing strategy has changed over time: “Initially, people who were living in areas with known spread of covid-19 were sampled. But since mid-March, people with symptoms consistent with covid-19 infection who are in need of inpatient hospital care, healthcare personnel and elderly care, and people who are being tested in sentinel testing are primarily being tested. This means that people with mild symptoms are not asked to contact the health care and therefore do not end up in the statistics of reported cases.” (via Google Translate)

Switzerland

→ View the country profile of Switzerland for the coronavirus pandemic.

Source: Federal Office of Public Health
Short description: The number of tests perfomed.

Latest estimate: 0.34 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Federal Office of Public Health presents a time series of daily positive and negative tests as a graphic. The data can be accessed by downloading the graphic software file. The graphic notes that “Since several tests can be taken and reported per person, the number of positive tests is higher than the number of positively tested people”. (via Googl translate).

The Federal Office of Public Health also publishes a daily report on the epidemiological situation, in which very similar cumulative figures are provided, but often rounded-off. These reports present the figures as “The number of tests carried out on SARS-CoV-2, the causative agent of COVID-19”.

Taiwan

→ View the country profile of Taiwan for the coronavirus pandemic.

Source: Taiwan Centers for Disease Control (CDC)
Short description: The figures are labelled in the source only as ‘tested’. It is unclear whether this relates to the number of individuals tested, or the number of samples tested.

Latest estimate: 0.01 daily tests per thousand people (as of 29 May 2020).

Detailed description:

The Taiwanese Centers for Disease Control (CDC) host a dashboard in which they publish the total ‘tested’ to date, and ‘new from yesterday’. It is not clear whether this represents the total number of tests performed, or the number of people tested. The number ‘tested’ is greater than the sum of confirmed cases and ‘excluded’ (i.e. negative) test results. This would suggest it does not equal the total number of people tested, or if it does, pending results without a reported outcome are also included.

Although the CDC only show the last day’s figures on this dashboard, we can construct a time-series by looking at previous versions on web archive. Where possible we have tried to take the total test counts at the same time every day (those published at 00:30h). Unfortunately this time of publishing from CDC was not always completely consistent. This may lead to small discrepancies between ‘total tested’ and ‘new from ‘yesterday’ figures. Wherever possible we took the total test count as of 00:30 as the prefered figure; where a day of data was missing we used the ‘new from yesterday’ figure to calculate the total for the previous day. If there are small discrepancies with other sources, this timing issue is likely to be the cause. In any case it is likely to be minor.

The date from which the total test figures date back to is not known; the CDC dashboard is unavailable in web archives prior to 21st March.

Thailand

→ View the country profile of Thailand for the coronavirus pandemic.

Source #1: Thailand, Department of Disease Control
Short description: The number of people tested.

Latest estimate: 0.06 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Thailand Department of Disease Control (DDC) issues daily situation reports which detail the status of confirmed cases, deaths and people being assessed.

We provide the figures reported as “persons under investigation” (PUI). PUI is the sum of confirmed cases, the number of people who tested negative, and the number of people for whom results are still pending. All three figures are reported individually from 3rd March until 31st March. From 1st April onwards, the number of people who tested negative and the number for whom results are still pending are no longer reported separately.

We have received communication from Thailand’s Ministry of Public Health (MOPH) that individuals who did not meet PUI criteria can pay out of pocket to have their samples tested, referred to as the “non-PUI” group. This “non-PUI” group is large in the context of Thailand. This “non-PUI” group is not reflected in our current figures.

The World Health Organization Country Office for Thailand also reports COVID-19 testing figures in daily situation reports. These figures are substantially larger than the DDC figures for two reasons. First, the DDC figures reflect “people tested”, whereas the WHO Thailand figures reflect “samples tested”. Second, the WHO Thailand figures appear to include all samples tested, regardless of whether the person being tested meets PUI criteria.

Source #2: World Health Organization Country Office for Thailand
Short description: The number of samples tested.

Detailed description:

The World Health Organization Country Office for Thailand provides daily COVID-19 situation reports that periodically report the cumulative number of samples tested to date.

The reported figures include PCR tests only. It is unclear whether pending test results are included.

The reported figures include samples tested in both public and private labs. However, reporting delays appear to affect the figures. For example, the figures for May 1st 2020 are drawn from only 121 of 142 public and private laboratories certified for PCR testing.

The earliest figure we have found is for April 10th 2020, at which point 100,498 samples had been tested. The reported figures are cumulative since sometime in January or February 2020, but the situation reports do not state an exact date.

The Thailand Department of Disease Control (DDC) also reports COVID-19 testing figures in daily situation reports, which are reflected in the reported number of “persons under investigation” (PUI). These figures are substantially smaller than the WHO Thailand figures for two reasons. First, the DDC figures reflect “people tested”, whereas the WHO Thailand figures reflect “samples tested”. Second, we have received communication from Thailand’s Ministry of Public Health (MOPH) that individuals who do not meet PUI criteria can pay out of pocket to have their samples tested, referred to as the “non-PUI” group. This “non-PUI” group is large in the context of Thailand and is not included in the DDC figures. In contrast, the WHO Thailand figures appear to include all samples tested, regardless of whether the person being tested meets PUI criteria.

Tunisia

→ View the country profile of Tunisia for the coronavirus pandemic.

Source: Tunisian Ministry of Health
Short description: Figures are provided both in terms of the number of cases tested and the number of tests. It may be that in the case of Tunisia the distinction between the number of individuals tested and the number of tests performed is less significant, if few people are tested more than once.

Latest estimate: 0.07 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Tunisian Ministry of Health dashboard provides daily figures of the total number of cases tested (‘Cas testés’). They also provide a time series for the number of tests per day (‘Nombre de tests journaliers’). The figures we provide relate to the latter.

The time series figures sum up to a number slightly higher than the cumulative figure provided for cases tested. We understand this to be equivalent to the number of individuals tested. It is unclear whether the difference between the numbers relates to a genuine distinction in the two figures between the number of indivudals tested and the number of tests performed, or if the differences are due instead to reporting delays or other unintended discrepancies.

It’s important to note that when figures exceed 1000, the Tunisian Ministry of Health report the number of tests per day to the nearest hundred (e.g. 1.6k).

The first date in the time series of daily tests is 10th March, for which 28 tests were reported.

Turkey

→ View the country profile of Turkey for the coronavirus pandemic.

Source: Turkish Ministry of Health
Short description: The total number of tests.

Latest estimate: 0.46 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Turkish Ministry of Health now publishes a daily chart of Coronavirus confirmed cases, deaths, recoveries, total tests (“TOPLAM TEST SAYISI”), and tests today (“BUGÜNKÜ TEST SAYISI”).

These daily charts are published on the Turkish Ministry of Health’s website – previous versions can be found on Web Archive. This only extends back to 27th March. Prior to this date, we rely on figures reported by the Turkish Minister for Health at daily press conferences. In these reports they detail the latest update of confirmed cases, deaths and tests conducted.

We are not aware of the date that testing began: only that as of 18th March – the first data point in our series – 10,018 tests had been conducted.

No other information concerning the figures is known.

Uganda

→ View the country profile of Uganda for the coronavirus pandemic.

Source: Press Release from the Office of the Director General
Short description: The number of samples tested.

Latest estimate: 0.05 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Office of the Director General publishes a daily press release detailing the cumulative number of samples tested to date, on the MOH official twitter account. The earliest press release that lists the cumulative total is 6th April. However, we cannot say with certainty when testing began and the precise date from which cumulative totals begin.

After the 14th April, press releases by the Office of the Director General publishes the daily number of samples tested. We sum the cumulative total number of samples tested for the previous day with the daily number of samples tested today. For example, the total number of samples tested on the 15th April is equal to the cumulative total up until the 14th April plus the number of samples tested on the 15th April.

For the 18th April, we rely on the figure reported by the MOH official twitter account to calculate our cumulative totals. From the 5th May, we rely on the figures reported by the MOH official twitter account and check figures against press releases where they have been made available by the MOH.

We are aware of Uganda’s MOH information portal, however, it only lists the ‘cumulative # tested’ without specifying more precise units of measurement. Our cumulative totals for the number of samples tested from 19/04 matches the ‘cumulative # tested’ total in the Uganda information portal for 20/04. This suggests the ‘cumulative # tested’ refers to the samples tested up until the previous day. However, the cumulative totals calculated via the daily press releases and the MOH information portal diverge from the 29th April.

Ukraine

→ View the country profile of Ukraine for the coronavirus pandemic.

Source: Cabinet of Ministers of Ukraine
Short description: It is unclear whether the reported figures represent the number of cases tested, number of samples tested, or number of people tested.

Latest estimate: 0.25 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Cabinet of Ministers of Ukraine reports daily snapshots here of the total number of tests to date. The unit of testing is unclear, since the figures are merely reported as “[N] tested” (“протестовано”). For this reason, it is unclear whether the reported figures represent the number of cases tested, the number of samples tested, or the number of people tested. It is also unclear whether the reported figures include pending test results.

The earliest reported figure that we have been able to find is from April 9th 2020, at which point 20,608 cumulative tests were reported.

United Kingdom

→ View the country profile of United Kingdom for the coronavirus pandemic.

Source #1: Public Health England/Department of Health and Social Care
Short description: The number of people tested.

Latest estimate: 1.18 daily tests per thousand people (as of 22 May 2020).

Detailed description:

A time series is not yet released. The figures we provide relate to the daily updates provided for the cumulative total and daily number of people tested. It is not clear the exact date that the cumulative figures date back to.

We were informed on 26 April 2020 that the daily changes in cumulative total, which we previously calculated by subtracting one day’s running total from the next one, couldn’t in fact be calculated in this way, and were provided directly on the page instead. We thus readjusted our time series using Tom White’s archives on GitHub, and from 26 April 2020 onwards we collect both figures directly from the official page.

The UK now provides its figures according to the ‘pillars’ of it’s testing strategy, as follows:

Pillar 1: swab testing in PHE labs and NHS hospitals for those with a clinical need, and health and care workers
Pillar 2: swab testing for health, social care and other essential workers and their households
Pillar 4: serology and swab testing: a national surveillance programme supported by PHE, ONS and Biobank to learn more about the prevalence and spread of the virus

As of 30 April, there were no people tested under Pillar 4 included in this series.

(As discussed in the Govenerment’s national testing strategy document, Pillar 3 relates to antibody tests – but these are currently not reported within the figures above).

The Health Service Journal highlighted in an article published on 1 May 2020 that “the Department of Health and Social Care [was] now including tests that have been posted or delivered to people’s homes in its figures. This means tests which are sent to people are counted before the recipient has provided and returned their sample to a laboratory.” No data is made available by the UK government on how many of these mailed tests have been returned and processed, but this could represent a significant number for recent days. As far as we know, the “People tested” figures are not affected by this issue.

Source #2: Public Health England/Department of Health and Social Care
Short description: The number of tests performed, including tests posted or delivered but not yet returned and/or processed.

Latest estimate: 1.88 daily tests per thousand people (as of 30 May 2020).

Detailed description:

A time series is not yet released. The figures we provide relate to the daily updates provided for the cumulative total and daily number of tests performed. It is not clear the exact date that the cumulative figures date back to.

We were informed on 26 April 2020 that the daily changes in cumulative total, which we previously calculated by subtracting one day’s running total from the next one, couldn’t in fact be calculated in this way, and were provided directly on the page instead. We thus readjusted our time series using Tom White’s archives on GitHub, and from 26 April 2020 onwards we collect both figures directly from the official page.

The UK now provides its figures according to the ‘pillars’ of it’s testing strategy, as follows:

Pillar 1: swab testing in PHE labs and NHS hospitals for those with a clinical need, and health and care workers
Pillar 2: swab testing for health, social care and other essential workers and their households
Pillar 4: serology and swab testing: a national surveillance programme supported by PHE, ONS and Biobank to learn more about the prevalence and spread of the virus

As of 30 April, around 10% of the total number of tests were reported under Pillar 4. How these further breakdown between serology and swab testing is not known.

As discussed in the Govenerment’s national testing strategy document, Pillar 3 relates to antibody tests – but these are currently not reported within the figures above.

The Health Service Journal highlighted in an article published on 1 May 2020 that “the Department of Health and Social Care [was] now including tests that have been posted or delivered to people’s homes in its figures. This means tests which are sent to people are counted before the recipient has provided and returned their sample to a laboratory.” No data is made available by the UK government on how many of these mailed tests have been returned and processed, but this could represent a significant number for recent days. As far as we know, the “People tested” figures are not affected by this issue.

United States

→ View the country profile of United States for the coronavirus pandemic.

Source #1: COVID Tracking Project
Short description: The data are an aggregation of figures released by individual states. The Project aim to report on the number of people tested, including private labs, but not all states report their figures in this way. The figures for some states appear to include antibody tests in addition to PCR tests.

Latest estimate: 1.49 daily tests per thousand people (as of 29 May 2020).

Detailed description:

This is a collaborative project launched in order to fill some of the important gaps in the testing figures being collated by the CDC.

Testing data is gathered from individual states, as reported in state health department websites, data dashboards and press releases from officials.

As of 26 May, there have been a number of media reports noting that the testing figures released by some states include antibody tests in addition to PCR tests – as discussed in this article in The Atlantic. Our dataset aims to report only PCR tests. But becasue some states do not disaggregate these types of tests we are not currently able to exclude the antibody tests.

Other differences across states include: some report the number of tests performed, others the number of people tested; some include private labs, others not; some report negative test results, others only positive test results; some include pending tests, others do not (below we show figures that exclude explicitly pending results).

Moreover, many states do not explicitly provide details about these important factors needed to interpret the data they provide.

There are issues in comparing the figures over time. The totals given for early on in the outbreak do not include all states. One significant uncertainty is the extent to which the rapid rise in tests seen from the mid-March in part reflects states beginning to report private lab tests.

Overall the figures should be seen as providing a general indication of testing output, rather than a specific count of a given indicator. Given the very incomplete coverage and reporting delays of the CDC data, it provides a very important additional perspective.

The Project documents their work in lots of detail. See the link provided above for full details.

Source #2: United States CDC
Short description: The number of tests performed. The figures are the sum across states, some of which appear to include antibody tests in addition to PCR tests.

Detailed description:

On 13 May 2020, the United States CDC’s testing data was modified to include tests performed by commercial, hospital, public health, and CDC laboratories. This new data is available on the Testing Data in the US page and CDC COVID Data Tracker.

Initially, this data was explicitly described by the CDC as only including viral tests and excluding antibody tests. As recently as 18 May the site stated that ‘These data only represent viral tests. Antibody tests are not currently captured in these data.’

However, as of 26 May, there have been a number of media reports noting that the testing figures released by some states – which are aggregated by the CDC – include antibody tests in addition to PCR tests, as discussed in this article in The Atlantic.

Within this time, the CDC have also changed the way it described the data to be ambiguous as to whether anitbody tests may be included in their figures (see 26 May update). Our dataset aims to report only PCR tests. But because any antibody tests in the CDC data are not disaggregated, we are unable to exclude them.

No time series is published for this new version of the data. We therefore started collecting on 13 May 2020 the cumulative total of viral tests reported, which is updated daily.

As of 26 May, the notes to the data provided by the CDC are limited. They state:

– These data are compiled from a number of sources. Not all tests are reported to CDC.
– The number of positive tests in a state is not equal to the number of cases, as one person may be tested more than once.

The CDC previously published a time series that only covered public health labs and did not include private lab tests, which were occurring in significant numbers. Daily figures were provided since 18 January. This data is still visible on this page of the CDC website.

Uruguay

→ View the country profile of Uruguay for the coronavirus pandemic.

Source: Ministry of Public Health
Short description: The number of tests performed.

Latest estimate: 0.33 daily tests per thousand people (as of 30 May 2020).

Detailed description:

The Ministry of Public Health in Uruguay publishes daily reports providing the cumulative total of tests performed. We received confirmation that the figures refer to tests, and not people. The source notes that “there are people who have been tested more than once. This explains why the total number of positive tests does not coincide with that of people with positive tests.”

We previously reported testing data from a dashboard maintained by El Observador, but on 20 April 2020 we replaced the entire time series based on the reports from the Ministry of Health.

Vietnam

→ View the country profile of Vietnam for the coronavirus pandemic.

Source: Vietnamese Ministry of Health
Short description: The source reports this as the ‘number of samples tested’. However, based on the context, it is unclear whether this refers to the total number of tests conducted, or number of people who have been tested.

Detailed description:

The Vietnamese Ministry of Health update its disease situation statistics page daily with the latest data on confirmed cases, deaths and samples tested.

It refers to its testing data as ‘samples tested’, and reports confirmed cases and negative samples separately; ‘sample tested’ generally matches the sum of confirmed cases and negative samples (though there are occasionally some small discrepancies – we report the sum of positive and negative in this case). This would suggest that ‘samples tested’ is equivalent to the number of people tested. However, it’s unclear whether ‘negative samples’ includes some instances of resampling for the same person. We therefore cannot say with certainty that these are equivalent.

Using web archives we can reconstruct a daily time-series of total samples by looking at previous versions of the updated website. These daily updates extend back to 2nd March. We cannot say with certainty when testing began, only that as of 2nd March 1753 samples had been tested.

Zimbabwe

→ View the country profile of Zimbabwe for the coronavirus pandemic.

Source: Zimbabwe Ministry of Health and Child Care
Short description: The number of tests performed.

Latest estimate: 0.01 daily tests per thousand people (as of 28 May 2020).

Detailed description:

The Zimbabwe Ministry of Health and Child Care provides daily press releases on its website and Twitter account (@MoHCCZim) that report the cumulative number of tests performed to date. The reported figures include positive, negative, and pending test results. It is not clear how many people have been tested, since the reported figures refer only to the number of tests conducted rather than the number of people tested.

The press release for May 6th 2020 reported that 7,808 PCR and 8,244 “rapid screening” tests had been conducted to date. We exclude rapid screening tests from the daily time series that we construct, since we assume that these are antibody tests.

Prior to May 6th 2020, the press releases either: (a) reported a combined cumulative total of PCR and rapid screening tests without providing a breakdown between the two types of tests; or (b) did not clearly specify whether the reported cumulative total was in reference to PCR tests, antibody tests, or both. For this reason, the daily time series we construct begins on May 6th 2020, at which point the press releases began to clearly indicate that the reported cumulative totals only include PCR tests.

Other countries

Below is the list of countries for which we have attempted to collect data but could not find official sources.

  • Algeria (last checked on 05 May 2020): no data from official sources could be found.
  • American Samoa (last checked on 05 May 2020): no data from official sources could be found.
  • Andorra (last checked on 05 May 2020): no data from official sources could be found.
  • Angola (last checked on 05 May 2020): no data from official sources could be found.
  • Aruba (last checked on 05 May 2020): no data from official sources could be found.
  • Belize (last checked on 05 May 2020): no data from official sources could be found.
  • Benin (last checked on 05 May 2020): no data from official sources could be found.
  • Bermuda (last checked on 05 May 2020): no data from official sources could be found.
  • British Virgin Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Burundi (last checked on 05 May 2020): no data from official sources could be found.
  • Cambodia (last checked on 05 May 2020): no data from official sources could be found.
  • Cameroon (last checked on 05 May 2020): no data from official sources could be found.
  • Cape Verde (last checked on 05 May 2020): no data from official sources could be found.
  • Cayman Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Central African Republic (last checked on 05 May 2020): no data from official sources could be found.
  • Chad (last checked on 05 May 2020): no data from official sources could be found.
  • China (last checked on 05 May 2020): we are not aware of any figures relating to the whole of China. There is some data relating to parts of China, for instance press releases concerning testing in Guangdong province.
  • Comoros (last checked on 05 May 2020): no data from official sources could be found.
  • Congo (last checked on 05 May 2020): no data from official sources could be found.
  • Cote d’Ivoire (last checked on 05 May 2020): no data from official sources could be found.
  • Curacao (last checked on 05 May 2020): no data from official sources could be found.
  • Democratic Republic of Congo (last checked on 16 April 2020): We have been unable to find any testing figures on the Ministry of Health website or other official sources.
  • Dominica (last checked on 05 May 2020): no data from official sources could be found.
  • Egypt (last checked on 05 May 2020): no data from official sources could be found.
  • Equatorial Guinea (last checked on 05 May 2020): no data from official sources could be found.
  • Fiji (last checked on 05 May 2020): no data from official sources could be found.
  • French Guiana (last checked on 05 May 2020): no data from official sources could be found.
  • Gabon (last checked on 05 May 2020): no data from official sources could be found.
  • Georgia (last checked on 05 May 2020): no data from official sources could be found.
  • Grenada (last checked on 05 May 2020): no data from official sources could be found.
  • Guam (last checked on 05 May 2020): no data from official sources could be found.
  • Guatemala (last checked on 05 May 2020): no testing data from official sources could be found.
  • Guinea (last checked on 05 May 2020): no data from official sources could be found.
  • Guinea-Bissau (last checked on 05 May 2020): no data from official sources could be found.
  • Guyana (last checked on 05 May 2020): no data from official sources could be found.
  • Haiti (last checked on 05 May 2020): no data from official sources could be found.
  • Honduras (last checked on 05 May 2020): no testing data from official sources could be found.
  • Jamaica (last checked on 05 May 2020): no data from official sources could be found.
  • Jordan (last checked on 05 May 2020): no data from official sources could be found.
  • Kiribati (last checked on 05 May 2020): no data from official sources could be found.
  • Kosovo (last checked on 05 May 2020): no data from official sources could be found.
  • Kyrgyzstan (last checked on 05 May 2020): no data from official sources could be found.
  • Laos (last checked on 05 May 2020): no data from official sources could be found.
  • Lebanon (last checked on 05 May 2020): no data from official sources could be found.
  • Lesotho (last checked on 05 May 2020): no data from official sources could be found.
  • Liechtenstein (last checked on 05 May 2020): no data from official sources could be found.
  • Macao (last checked on 05 May 2020): no data from official sources could be found.
  • Madagascar (last checked on 05 May 2020): no data from official sources could be found.
  • Mali (last checked on 05 May 2020): no data from official sources could be found.
  • Marshall Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Mauritania (last checked on 05 May 2020): no data from official sources could be found.
  • Mauritius (last checked on 05 May 2020): no data from official sources could be found.
  • Micronesia (country) (last checked on 05 May 2020): no data from official sources could be found.
  • Moldova (last checked on 05 May 2020): no data from official sources could be found.
  • Monaco (last checked on 05 May 2020): no data from official sources could be found.
  • Mongolia (last checked on 05 May 2020): no data from official sources could be found.
  • Montenegro (last checked on 05 May 2020): no data from official sources could be found.
  • Nauru (last checked on 05 May 2020): no data from official sources could be found.
  • New Caledonia (last checked on 05 May 2020): no data from official sources could be found.
  • Nicaragua (last checked on 05 May 2020): no data from official sources could be found.
  • Niger (last checked on 05 May 2020): no data from official sources could be found.
  • North Korea (last checked on 05 May 2020): no data from official sources could be found.
  • Northern Mariana Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Palau (last checked on 05 May 2020): no data from official sources could be found.
  • Papua New Guinea (last checked on 05 May 2020): no data from official sources could be found.
  • Saint Kitts and Nevis (last checked on 05 May 2020): no data from official sources could be found.
  • Saint Lucia (last checked on 05 May 2020): no data from official sources could be found.
  • Saint Vincent and the Grenadines (last checked on 05 May 2020): no data from official sources could be found.
  • Samoa (last checked on 05 May 2020): no data from official sources could be found.
  • San Marino (last checked on 05 May 2020): no data from official sources could be found.
  • Sao Tome and Principe (last checked on 05 May 2020): no data from official sources could be found.
  • Sint Maarten (Dutch part) (last checked on 05 May 2020): no data from official sources could be found.
  • Solomon Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Somalia (last checked on 05 May 2020): no data from official sources could be found.
  • South Sudan (last checked on 05 May 2020): no data from official sources could be found.
  • Sri Lanka (last checked on 05 May 2020): no data from official sources could be found.
  • Sudan (last checked on 05 May 2020): no data from official sources could be found.
  • Suriname (last checked on 05 May 2020): no data from official sources could be found.
  • Syrian Arab Republic (last checked on 05 May 2020): no data from official sources could be found.
  • Tajikistan (last checked on 05 May 2020): no data from official sources could be found.
  • Tanzania (last checked on 16 April 2020): The Tanzania Ministry of Health press releases report the number of confirmed cases, but not the number of tests conducted. We have been unable to find official testing figures from any other official source.
  • Togo (last checked on 05 May 2020): no data from official sources could be found.
  • Tonga (last checked on 05 May 2020): no data from official sources could be found.
  • Turkmenistan (last checked on 05 May 2020): no data from official sources could be found.
  • Turks and Caicos Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Tuvalu (last checked on 05 May 2020): no data from official sources could be found.
  • United States Virgin Islands (last checked on 05 May 2020): no data from official sources could be found.
  • Uzbekistan (last checked on 05 May 2020): no data from official sources could be found.
  • Vanuatu (last checked on 05 May 2020): no data from official sources could be found.
  • Venezuela (last checked on 05 May 2020): no testing data from official sources could be found.
  • Yemen (last checked on 05 May 2020): no data from official sources could be found.

Frequently Asked Questions about our COVID-19 Testing dataset

Why are not all countries included in your data?

We do not have testing data for all countries.

For some countries we are aware of a source of data and are currently in the process of adding it to our dataset.

For others, we are not aware of any official source of testing data.

If you are aware of a source of testing data for a country that we do not currently list, you can help us by filling out this Google Form.

Who provides you with the data on testing?

Testing data is collected by Our World in Data by browsing public information from official sources. We rely on figures published on official websites, in press releases and by social media accounts of national authorities—usually governments, ministries of health, or centres for disease control.

Our testing dataset is entirely replicable:

How up-to-date is your data?

We regularly update our testing data—around twice a week. You can see when we last updated the dataset at the top of this section.

We only use information made publicly available by each country. Many countries do not release figures on a daily basis.

Are tests pending results included?

Few countries explicitly state whether their published figures include tests pending results or not. We note any available information about this in the data descriptions for each country.

Where figures including and excluding pending tests are both available, we exclude them from our figures. The details of this are always documented in the data descriptions for each country.

As a minimum requirement, we only include figures in the dataset that count both positive and negative test outcomes (and if included, pending results too) according to a consistent unit (i.e. the figures for both positive and negative test outcomes refer either to the number of tests, or the number of people tested, but not a mix of the two units).

How can I see changes you’ve made to the database?

Anyone can track changes to our data and updates using our GitHub repository. Each file presents a full history of changes (commits). This allows viewers to trace back any addition or edit to a particular date and time.

Do countries report to you, and then you report to others such as the UN, WHO, OECD or the World Bank?

Our World in Data does not report data privately to any party. Similarly, countries do not report privately to Our World in Data either. 

Every source we consult is public, our data collection can be replicated, and our numbers can be used by anyone. Any person or organization can consult and use our database. 

In particular, Our World in Data does not report directly to international organizations. When these organizations want to rely on our data, they visit our website, and access the same public information that is available to everyone. 

Do you verify the data published by countries?

Our World in Data highlights ambiguities or problems with official sources; but this process is entirely done based on public information, and there is no direct verification with government officials. We list all ambiguities and data problems for each country in the detailed source descriptions.

Do your estimates aggregate antibody tests and PCR tests?

Where countries provide disaggregated testing figures for different testing technologies, we will include only PCR tests in this dataset. The reason for this is explained in our background information on testing.

Few countries currently explicitly state the testing technology to which their figures relate. However, many countries refer to their testing figures as relating to ‘laboratory’, ‘diagnostic’, or ‘swab’ testing. In general, this is an indication that figures relate to PCR tests, particularly in the context that this technology remains the WHO recommended basis for case confirmation.8

As of 4 May, we are only aware of official data on antibody tests published by Spain and Ecuador.

Do you publish data on antibody tests?

We do plan to publish a new dataset showing figures specifically on antibody tests. This is an area where we plan to expand as more countries adopt systematic antibody testing strategies.

Acknowledgements

We would like to acknowledge and thank a number of people in the development of this work: Carl Bergstrom, Bernadeta Dadonaite, Natalie Dean, Jason Hendry, Adam Kucharski, Moritz Kraemer and Eric Topol for their very helpful and detailed comments and suggestions on earlier versions of this work. Tom Chivers we would like to thank for his editorial review and feedback.

And we would like to thank the many hundreds of readers who give us feedback on this work every day. Your feedback is what allows us to continuously clarify and improve it. We very much appreciate you taking the time to write. We cannot respond to every message we receive, but we do read all feedback and aim to take the many helpful ideas into account. Thank you all.