COVID-19 was in U.S. by Christmas 2019, new evidence showsCOVID-19 was in U.S. by Christmas 2019, new evidence showsCOVID-19 was in U.S. by Christmas 2019, new evidence shows

COVID-19 was in U.S. by Christmas 2019, new evidence shows

Federal health officials are increasingly accepting a timeline in which small numbers of COVID-19 infections may have occurred in the U.S. before the world ever became aware of a dangerous new virus erupting in China.

from Section Page News - Modern Healthcare https://ift.tt/3cMc83T