Could you have had COVID-19 as early as last year?
But a new study published in the journal Clinical Infectious Diseases suggests that the coronavirus, known officially as SARS-CoV-2, may have infected people in the U.S. as early as Dec. 2019. Researchers analyzed blood donations collected by the American Red Cross from residents in nine states. They found evidence of coronavirus antibodies in 106 out of 7,389 blood donations. The Centers for Disease Control and Prevention analyzed blood that was collected between Dec. 13 and Jan. 17. “The presence of antibodies in a person’s blood means they were exposed to a virus and their body’s ...