COVID-19 testing data plotted
Private and Public data
Get the data used here daily.csv.
- Private (mostly Quest and Labcorp) and state labs were permissioned to start testing in early March. This testing has more variation and is less consistent than CDC funded Labs but does report positive and negative test results (CDC funded Labs don't, so their data is not as useful). Total (public and private sector) tests to date are
63,715,548 as reported at the Covid Tracking Project with total positives at
5,172,216 and approximately confirmed
at the worldometers website as
- Daily tests rates are graphed below.
Some observations about testing
- "Tests? What's a test?" from the Atlantic.
- See this article about false negative results from Bloomberg News.
- "people are not being tested before or after they die". See this article about inaccurate counts from BuzzFeed News which highlights why the availability of tests is important and appears to be affecting these counts.
- A similar article from the Washington Post about covid-19 deaths not being counted.
- From FiveThirtyEight, Coronavirus Case Counts Are Meaningless.
- Daily new cases are graphed below.
- Based on these numbers the current testing 'hit' rate is the positive results divided by the total tests
gives a testing 'hit' rate.
Some observations about hit rates
- This article from the Atlantic that explains why hit rates matter.
- The Reykjavik Grapevine has article about hit rates projected to the entire population of Iceland (about .6% from the random sampled test).
- See this article in the NY Times about hit rates in Iceland.
- A similar article from USA Today.
The data is automatically checked for updates periodically.
- The worldometers data last updated
- The Covid Tracking Project data last updated
More COVID-19 links