On May 9, 2020, 109 days after the first known case of COVID-19 in the United States, the Centers for Disease Control and Prevention launched its first national and state-level release of COVID-19 testing data from public, hospital, and commercial laboratories.
The COVID Tracking Project at The Atlantic has released a white paper collecting the results of our in-depth review of the differences between the CDC’s case, death, and testing data compared to the corresponding data publicly reported by the states and the District of Columbia.