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WHO warns that Covid reinfection may occur as data suggest that antibodies have declined

Tedros Adhanom Gebreyes R, Director of the World Health Organization, will speak at a daily briefing in Geneva, Switzerland.

Chen Juncia | Xinhua News Agency | Getty Images

World Health Organization officials warned on Friday that recent data, although rare, suggest that people once infected with the coronavirus may be infected again as the antibody response weakens. ..

“Although the number of infected people continues to grow, we also see data that reinfection may begin to occur because protection does not last a lifetime,” said Mike, WHO Executive Director of Health. Dr. Ryan said. The emergency program was mentioned at a press conference at the organization’s Geneva headquarters. “So the question is, what is the level of protection in society?”

According to the US Centers for Disease Control and Prevention, reinfection means that a person is infected with the virus, recovers, and then becomes infected again. Based on the CDC’s experience with other viruses, Covid-19 reinfection is expected, officials said.

However, researchers are trying to identify considerations such as the likelihood and frequency of reinfection, the severity of reinfection, and the time of occurrence after the initial infection.

Maria Van Kerkhove, head of the WHO Emerging Infectious Diseases and Zoonotic Unit, said researchers are still trying to determine how long the antibody response will last after someone is infected with the virus.

“We understand 90[%] 100% of people infected with the coronavirus have an antibody response, ranging from mild, asymptomatic, and severe infections, “she says.

Ongoing studies have shown that the immune response may last for more than 6 months, she said. A recent Oxford University study found that people infected with the coronavirus were “very unlikely” to be infected with the coronavirus again for at least 6 months.

In an April-November study of 12,180 healthcare workers at Oxford University Hospital, 89 of the 11,052 antibody-free staff developed a new symptomatic infection. I found out. None of the 1,246 staff members with antibodies developed symptomatological infections.

“Some people have good signs that the immune response to a natural infection lasts for months, although it may decline after a few months,” said Wankelhove. “We take about a year for this pandemic, so we still have a lot to learn.”

In late August, Hong Kong researchers first confirmed Covid reinfection after a 33-year-old man who was first infected with the virus in late March appeared to be infected again after more than four months. I reported what seems to be a case. STAT news has been reported. WHO acknowledged that reinfection could be possible, albeit rarely at the time.

“It doesn’t mean it’s happening often, I know it’s possible,” Wankelhoff said in a live Q & A session on August 26th.

— CNBC Sam Meredith Contributed to this report.

WHO warns that Covid reinfection may occur as data suggest that antibodies have declined

Source link WHO warns that Covid reinfection may occur as data suggest that antibodies have declined

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