CNNUpdated 1:48 AM ET
the Korea Centers for Disease Control and Prevention
Paula Hancocks
Julia Hollingsworth
Facebook Messenger
Shawn Deng
Jake Kwon
No matching tags
No matching tags
No matching tags
Yoonjung Seo
Seoul
South Korea
No matching tags
In South Korea, health officials are trying to solve a mystery: why 163 people who recovered from coronavirus have retested positive, according to the Korea Centers for Disease Control and Prevention (KCDC).
As said here by Paula Hancocks, Yoonjung Seo and Julia Hollingsworth, CNN