https://techcrunch.com/2020/04/29/johns-hopkins-launches-covid-19-testing-hub-to-provide-public-access-to-testing-data/

The COVID-19 testing picture in the U.S. is far from easy to understand, given the disparate agencies and public and private health organizations involved. Johns Hopkins, building on its excellent work developing COVID-19 case tracking and basic information resources, has developed a new hub called the COVID-19 Testing Insights Initiative that breaks down what kinds of tests are available, as well as where they’re being administered in the U.S., and in what volume.

The new hub offers answers to commonly asked questions like how COVID-19 is currently diagnosed, what the differences are between the two major types of tests used (molecular and serological) and what is required for testing in terms of both payment and qualifying symptoms/exposure risk.