SEOUL, May 7 — South Korean health authorities raised new concerns about the novel coronavirus after reporting last month that dozens of patients who had recovered from the illness later tested positive again. The findings suggested that some people who survived Covid-19 could become reinfected...
Thursday, 07 May 2020 01:02 PM MYT
The findings suggested that some people who survived Covid-19 could become reinfected with the virus that causes it, potentially complicating efforts to lift quarantine restrictions and to produce a vaccine. While officials examined several possible explanations, including reinfection of patients, or reactivation of the virus, an expert panel convened by the government concluded last week that the most likely explanation was that the tests are returning “false positives.”
But in some cases, the tests may detect old particles of the virus, which may no longer pose a significant threat to the patient or others, said Seol Dai-wu, an expert in vaccine development at Seoul's Chung-Ang University. Authorities are still gathering evidence to support their theory that the particles are from “dead” virus cells, KCDC director Jeong Eun-kyeong said yesterday.
The KCDC has not found a single case where such patients had passed the coronavirus to another person, Jeong said.
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