May 22 (UPI) -- Up to one in six people declared recovered from COVID-19 and discharged from the hospital still test positive for the virus up to three weeks later, meaning they still could be contagious, according to a study published Friday by
May 22 (UPI) -- Up to one in six people declared recovered from COVID-19 and discharged from the hospital still test positive for the virus up to three weeks later, meaning they still could be contagious, according to a study published Friday by