A recent study found that people who do not show symptoms of infection with the emerging corona virus that causes "Covid-19" are more likely to lose antibodies quickly than those who have symptoms of infection.

The French newspaper "Le Figaro" said in its report that the study was conducted by Imperial College London and Ipsos MORI.

For its part, "Reuters" said that the study showed that the antibodies to the Corona virus declined quickly in the British during the summer, which indicates that prevention after infection may not last for long and increases the possibility of a decrease in immunity in society.

Scientists at Imperial College London tracked British antibody levels after the first wave of Covid-19 infections in March and April.

The study found that antibody prevalence fell by a quarter, from 6% of the population near the end of June to just 4.4% in September.

This raises the possibility of a decrease in the population's immunity before a second wave of infections in recent weeks, which has forced the authorities to impose general isolation measures and local restrictions.

Although immunity to the Corona virus is a complex and mysterious issue, and T cells may help it, as well as B cells that can stimulate the rapid production of antibodies after re-exposure to the virus, the researchers say that the experience gained from knowing other Corona viruses indicated that immunity may not last .

"We can see the antibodies retreat, see them regress, and we know that the antibodies on their own are completely protective," Wendy Barclay, head of the infectious diseases department at Imperial College London, told reporters.

She added, "In light of what we know about other corona viruses, it will seem as if immunity is declining at the same rate as antibodies retreat, and this is an indication of weak immunity at the population level."

The study showed that those who were confirmed to have COVID-19 through the standard Polymerase Chain Reaction (PCR) test, their antibody decline was less pronounced compared to those who did not show symptoms and those who were not aware of their infection. basically.

The graphic below shows 9 of the most prominent symptoms of Corona virus, and to find out a detailed list of symptoms of Corona infection, click on this link.

Frequent exposure

There was no change in the antibody levels of the health care workers, which may be due to their repeated exposure to the virus.

The study supports the findings of similar surveys in Germany, which found that the vast majority of people did not have antibodies to Covid-19, even in outbreaks, and that the antibodies may diminish from the bodies of those who had formed them.

Imperial College released its study, which was based on a survey of 365,000 randomly selected adults, as a preliminary paper and was not verified according to a peer review method.

Barclay concluded that the rapid decline in antibodies did not necessarily have a negative effect on the effectiveness of vaccines currently undergoing clinical trials.

"A good vaccine may be a lot better than natural immunity," she added.

"Le Figaro" said that the University "Imperial College London" and Ipsos More British - which in their press release are calling on the British to continue to follow the health instructions - confirmed that "it is not known yet whether the antibodies confer an effective level of immunity, and how long will immunity last if it is present." Really?".