Researchers from the United States studied the likelihood of acquiring lasting immunity to COVID-19 and found that in most people, antibodies disappear shortly after illness. However, in 20% of luli, they not only did not disappear, but also increased.. On Tuesday, November 17, the publication Science first hand reports.. It is noted that scientists worked with blood samples from 92 people who had had mild to moderate COVID-19 from March to June 2020.. " Observation of the rest showed that after three months, most of the antibody titers dropped by 72-88%, depending on the viral antigen to which they were targeted. However, in about a fifth of those surveyed, they unexpectedly grew, " A month later, it turned out that those whose antibody level did not fall, it increased even more. Presumably, the antigen can be retained in lymphoid tissues for many months after an active infection, and all this time, the " Part of B-lymphocytes become memory cells, which, upon re-infection, will provide a quick immune response. It is noted that those who quickly recovered from COVID-19 have a " In addition to a high level of antibodies, this type of immune response is characterized by a high level of mutations in genes that determine the diversity of virus-specific memory B-cells, and a large number of activated immune cells of another type - T-cells, which are necessary for the development of acquired immunity.. " One of the assumptions is the presence of memory cells for other coronaviruses that cause common ARVI, which facilitate the response to SARS-CoV-2, " At the same time, in people who have had other coronaviruses, the dynamics of the level of antibodies has the same character: in some of them the level is close to the background level already 3-5 months after the illness, while in others it is close to the peak even after a year..

Earlier it was reported that part of the population has a natural immunity to coronavirus. Cross-reactive antibodies result from contact with other coronaviruses similar to SARS-CoV-2. Influenza vaccine has also been reported to protect against complications from COVID-19. Doctors do not yet know what this is connected with, since antibodies to influenza do not respond to coronavirus. News from in Telegram. Subscribe to our channel https: // t. me / korrespondentnet Author: 1.