A new study by King's College in London states that the percentage of antibodies in the blood drops dramatically after 3 months • "Every year people may need two vaccines"

A new study recently published by King's College University in London reinforces the accumulated information that it is unlikely that herd immunity can be developed against the corona virus, and that people may get the virus again and again.

The researchers performed blood tests on about 90 doctors and nurses in the British public service, as well as a number of patients who all contracted the virus and developed disease at various levels. The findings showed that after three months from the moment of recovery, the percentage of antibodies in the blood that fight the virus dropped dramatically, with the decrease being 23 times less than at the peak of the disease. Only 17 percent of the subjects had a high level of antibodies after three months. 

"People develop antibodies to the virus during the disease, but these abilities fade over time, when the scale is how sick you were at first," says the study's lead author, Dr. Katie Dores, of King's College. The researcher added that "was and these data will be proven again As is true, the whole idea of ​​herd immunity does not exist at all. The corona virus will behave like any seasonal disease, and will need to be vaccinated every year anew to deal with it. It is also possible that each year people will have to receive two doses, "Dr. Dors noted.

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In addition, the researcher said that this is a preliminary study, which has not yet undergone peer review and review, but is reinforced by a study conducted by Oxford University, which conducted a similar experiment on macaques exposed to the virus. Although the monkeys developed a vaccine for the corona virus, it was partial. The level of antibodies was lower than the antibodies a person needed in order not to be infected, so they were able to pass the disease on, although for the most part they did not contract it themselves at a severe level.

Another researcher in the study, Professor Stuart Neil, also noted that herd immunity is not guaranteed when it comes to the corona virus and said: "In fact, there may be a pattern here that reminds of the flu. This is very important, because if so, then all young people who want to be infected "They risk themselves. They risk that the virus will return every year, and there is no way to avoid the disease, which also has difficult aspects. In fact, even if you become infected, you are not sure and you can develop severe lung disease as a result of the virus next year." 

Professor Robin Shattock, of Imperial College London, addressed the issue of herd immunity in an interview with Sky News, saying: "One should know that there is currently no real evidence that a good vaccine will be found, and it is not clear at all what type of vaccine will produce long-term resistance." Prof Shatok said that “even if we get sick every year, the body will still have a memory of how to fight the virus. In any case, if we want a vaccine, it will have to be based on the antibodies of the body, because these disappear over time. "