Note: I started posting this graph when the US was doing a few thousand tests per day. Clearly the US was way under testing early in the pandemic. I’ll continue posting this graph daily at least until the percent positive is continuously under 3% and the daily positive is significantly lower than today.
The US is now usually conducting over 400,000 tests per day, and that might be enough to allow test-and-trace in some areas. Based on the experience of other countries, the percent positive needs to be well under 5% to really push down new infections, so the US still needs to increase the number of tests per day significantly.
According to Dr. Jha of Harvard’s Global Health Institute, the US might need more than 900,000 tests per day .
There were 419,637 test results reported over the last 24 hours.
Click on graph for larger image.
This data is from the COVID Tracking Project.
The percent positive over the last 24 hours was 5.0% (red line).
For the status of contact tracing by state, check out testandtrace.com.