South Korean expert downplays concerns of COVID-19 reinfection

South Korean infectious disease experts are downplaying concerns that patients could get reinfected with the new coronavirus after fully recovering.

While hundreds in South Korea have tested positive again after their release from hospitals, Oh Myoung-don, who heads the country’s central clinical committee on new infectious diseases, tells a news conference there is a “high possibility” that such test results were flawed.

He says South Korea’s standard real-time PCR tests, designed to amplify the genetic materials of the virus so that even tiny quantities are detected, doesn’t reliably distinguish between remains of dead virus and infectious particles. He says lab tests on animals suggest that COVID-19 patients would maintain immunity for at least a year after their infections.

He also says it is unlikely that the virus could be reactivated after remaining dormant when it doesn’t seem to be a type that causes chronic illnesses.

As of Tuesday, 277 people in South Korea tested positive for the virus for a second time after being diagnosed as recovered. Health authorities have tested some of their samples, but none so far have been successfully cultivated in isolation, indicating a loss of infectiousness.

— AP