AdvertisementIn South Korea, A Growing Number Of COVID-19 Patients Test Positive After RecoveryApril 17, 2020Se Eun GongfacebookEmailAntibody test cartridges used in diagnosing the coronavirus move along on a production line at Boditech Med in Chuncheon, South Korea. By Friday, authorities had identified 163 patients who tested positive again after a full recovery. (AP)