Covid-19 may have infected people in the United States since December 13, 2019, according to a study published Monday in the journal Clinical Infectious Diseases and conducted by scientists from the Centers for Disease Control and Prevention.
Study suggests that covid-19 could have circulated in the US since December 2019 | Video | CNN
2020-12-02T06:04:00.293Z
Covid-19 may have infected people in the United States since December 13, 2019, according to a study published this Monday in the journal | United States | CNN
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