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South Korean officials have reported that 91 patients thought cleared of the new coronavirus tested positive again.
Jeong Eun-kyeong, director of the Korea Centres for Disease Control and Prevention (KCDC), told a briefing that the virus may have been “reactivated” rather than the patients being re-infected.
South Korean health officials said it remains unclear what is behind the trend, with epidemiological investigations still under way.
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