FILE - In this Feb. 18, 2020, file photo, Dr. Zhou Min, a recovered COVID-19 patient who has passed his 14-day quarantine, donates plasma in the city's blood center in Wuhan in central China's Hubei province. Plasma from recovered COVID-19 patients contains antibodies that may help reduce the viral load in patients that are fighting the disease. (Chinatopix via AP, File)