An South Korean official holds up an antibody test cartridge. Photo: AP

South Korean patients who test positive for reactivated coronavirus have ‘little or no infectivity’, officials say

  • Even though the virus in these patients has low infectivity, the phenomenon has implications for attempts to use antibodies to develop a vaccine
  • If Covid-19 remains in the system, even after antibodies are formed, ‘it could surge back, causing a relapse in symptoms’, one expert warned
Topic |   Coronavirus pandemic
An South Korean official holds up an antibody test cartridge. Photo: AP
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