South Korea reports recovered coronavirus patients testing positive again

A woman wearing a preventive face mask has her temperature checked, as a safety measure to prevent the further spread of the coronavirus, before casting a ballot for parliamentary elections at a polling station in Seoul, South Korea, April 10, 2020. REUTERS/Heo Ran

SEOUL (Reuters) - South Korean officials on Friday reported 91 patients thought cleared of the new coronavirus had tested positive again.

Jeong Eun-kyeong, director of the Korea Centers for Disease Control and Prevention (KCDC), told a briefing that the virus may have been "reactivated" rather than the patients being re-infected.