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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.

Download Assessment of New CDC COVID-19 Data Reporting