NPR | COVID-19 In U.S. Weeks Earlier Than Previously Known
Coronavirus Was In U.S. Weeks Earlier Than Previously Known, Study Says
The coronavirus was present in the U.S. weeks earlier than scientists and public health officials previously thought, and before cases in China were publicly identified, according to a new government study published Monday.
The virus and the illness that it causes, COVID-19, was first identified in Wuhan, China, in December 2019, but it wasn’t until Jan. 19 that the first confirmed COVID-19 case, from a traveler returning from China, was found in the U.S.