Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP
Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP

Poor immunity or mutations? South Korea investigates ‘shrewd’ coronavirus as reinfections creep up

  • 141 South Koreans have retested positive for Covid-19. While it’s a small fraction of recovered patients, it raises doubts about developing a vaccine
  • Health experts say this could be from reinfection, reactivation after being dormant, or simply mass testing picking up remnants of the virus in patients

Topic |   Coronavirus pandemic
Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP
Health care workers arrive for duty at Dongsan Medical Centre in Daegu, South Korea. The city has seen a number of cases of recovered coronavirus patients testing positive again. Photo: AP
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