Before March 15 , 2020 , according to the CDC , less than 20,000 individuals had been tested , out of which less than 4,000 by the CDC labs and less than 18,000 by US public health labs during the coronavirus pandemic .
As of March 14 , the CDC reported that 19,744 specimens had been tested for COVID-19 , 3,995 of which were tested by CDC labs , and 15,749 tested by U.S. public health labs.
2020 coronavirus pandemic in the United States