EXPLAINER: After recovery, why are some S. Koreans testing positive for coronavirus again?

SEOUL: After a small but growing number of recovered coronavirus patients was noticed in South Korea, the officials scrambled to find out why they are testing positive for the virus again.

Among the main possibilities are re-infection, a relapse, or inconsistent tests, experts say.

South Korea had reported 141 such cases as of Thursday, according to the Korea Centers for Disease Control and Prevention (KCDC).

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