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CoronaMelder
Logo CoronaMelder-App

CoronaMelder Daten-Dashboard

The statistics on this page have been updated up to and including Wednesday 20 April 2022. Due to the temporary suspension of CoronaMelder on 22 April 2022, the statistics on this page are no longer updated weekly.

Active users of CoronaMelder:

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The graph shows how many people are actively using the CoronaMelder app.

You can find more information at the GitHub page of the Ministry of Health, Welfare and Sport.

Due to the discontinuation of CoronaMelder on April 22, 2022, the statistics will no longer be updated.

Chart showing active users of CoronaMelder per month. The chart starts with just over 3 million users in May 2021, with a peak in June 2021. Thereafter, it starts to decline until just under 2 million people use CoronaMelder in January 2022, when the number of users rises again to almost 2.5. million users.

Graph source data

Active users of CoronaMelder
Month Number of active users

People who warned others via CoronaMelder:

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If you have tested positive for corona, you can voluntarily indicate this in the app, together with an employee of the GGD. The graph shows how many people have done this after the national introduction of CoronaMelder on October 10, 2020.

Due to the discontinuation of CoronaMelder on April 22, 2022, the statistics will no longer be updated.

Chart showing sent notifications via CoronaMelder per month. A steady increase since October 2020, leveling off somewhat in the summer months of 2021.

Graph source data

Number of warnings through CoronaMelder
Month Number of shared keys per month Number of shared keys, cumulative

Test applications after notification Corona Melder

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Of which tested positive
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The graph shows how many people had themselves tested after a notification from CoronaMelder since the app was put into use on October 10, 2020.

Notifications Tested positive
Graph tests taken following a notification. An average of around 18 thousand, with peaks rising in December 2020 with nearly 49 thousand tests, and fewer tests taken in the summer months of 2021. The percentage tested positive has been increasing since December 2021.

Graph source data

Test applications after notification Corona Melder
Month Number of test applications Of which tested positive

Positive test results preceded by a notification, with/without symptoms

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Of which tested positive without having symptoms:
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The graph shows how many people had themselves tested after a notification from CoronaMelder, were found to have the corona virus, and how many of them had no symptoms of the corona virus.

Due to the discontinuation of CoronaMelder on April 22, 2022, the statistics will no longer be updated.

Symptoms No symptoms
Chart of tests taken that were preceded by a notification per month, divided into number of complaints and no complaints. In the summer of 2021, fewer people were tested, and few people were positive without symptoms. This will steadily increase again from November, with record breaking numbers in March 2022.

Graph source data

Tests taken after notification Corona Melder
Month Number of tests taken Number of tests taken, which resulted in positive diagnosis Number of positive diagnosed people who were not having symptoms Percentage positive without symptoms

Effects of CoronaMelder

61% of the people who did a corona test after a notification from CoronaMelder had not yet been approached from the regular source and contact research.