Experts explain cases that were positive for the SARS-CoV-2 virus

In early April, South Korea stated that some patients who had been cured of their disease were positive for the new coronavirus (SARS-CoV-2), raising concerns that the virus might reactivate. The patient may become newly infected with the virus. According to Herald of koreaAs of April 30, South Korea had more than 260 positive cases after curing of Covid-19 symptoms.

However, infectious disease experts from Korea said yesterday that they suspected the tests were positive with samples of so-called “virus fragments.” The scientists also discovered that the viruses did not appear to work again after the patient was treated with Covid-19. Herald of korea.

Professor Oh Myoung-don, head of the Department of Infectious Diseases at Seoul National University Hospital, said the department under his leadership had little reason to believe that the patient was reinfected with the virus or virus. reactivate

“Tests have detected RNA from dead viruses,” said Oh, an adviser to the Korea Centers for Disease Control and Prevention (KCDC).

Earlier in the month of April, Jeong Eun-kyeong, general manager of KCDC, proposed the theory that the virus could “reactivate” after the patient was cured.

However, experts later expressed skepticism that the virus could be restored after being “deactivated”. Instead, they are in favor of the theory that there is still a “viral fragment” in the sample, which means that a person can be positive again but have no symptoms or pass the disease on to others.

Keiji Fukuda, an expert at the University of Hong Kong School of Public Health, said the above explanation is considered the most likely scenario.

Mr. Oh said that it can take several months for dead virus cells to completely clear from the patient’s body after being treated with Covid-19. Meanwhile, current tests cannot determine whether the virus is dead or alive, leading to what is known as a “false positive.”

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