Experts of the World Health Organization warn that the human body may not produce enough antibodies, leading to the risk of Covid-19 infection.
According to the Nikkei Asia Review, the World Health Organization (WHO) on 13/4 said it is not clear whether patients who have recovered from Covid-19 have immunity to corona virus.
WHO said some recovered patients did not produce enough antibodies to fight corona virus the next time they were exposed.
According to research conducted in Shanghai, China, some patients recover after “no reaction of antibodies”, while others show very high reactions, infectious disease expert Maria Van WHO’s Kerkhove said.
A WHO expert said a person will still test positive for corona virus if the body does not produce enough antibodies. Van Kherkove said that more information is needed from patients who have recovered, and WHO is currently collecting more data for analysis.
In South Korea, 111 people had tested positive for Covid-19 after ever recovering.
Mike Ryan, head of the WHO’s emergency response department, said it was not clear whether the positive for Covid-19 after recovery was due to reactivation of the virus or a new infection from another virus source. Ryan also said it was unclear how long the anti-Covid-19 antibody would work.
When a person is infected with a virus, the body often produces antibodies that close the immune system, making it difficult for people to become infected with the virus again.
However, some patients in Korea and Japan have tested positive for Covid-19 after recovering from their first infection. This raises the possibility that the human body does not produce enough antibodies to create immunity.
“While Covid-19 grew very fast, its deceleration was much slower,” said WHO Director-General Tedros Adhanom Ghebreyesus.
Mr. Tedros recommends that epidemic control measures, if removed, should be taken with care.