New research from Imperial College: How long does immunity last after a coronavirus infection?

How long does the human body’s immunity last after the coronavirus infection and the necessary treatment? “I have immunity,” said Donald Trump, returning to the election campaign after recovering from coronavirus, according to a recent British survey. “I want to kiss you,” the American president shouted at his enthusiastic followers, but in the end he did not keep his promise. It was probably better that way. If nothing else, because no one knows if the White House resident has actually developed immunity. The question of how long a body’s natural immunity lasts after infection has puzzled scientists since the beginning of the pandemic. The duration of immunity also depends on age, say researchers from Imperial College. British scientists find that natural immunity declines even after a relatively short period of time. However, this depends on many factors and mainly on age. According to this research, in patients over 75 years of age the immunity seems to decline much faster than at a young age. But the duration of immunity also depends on the disease intensity. Another interesting conclusion was that in health care workers the immunity is slower to subside, which may be due to the more intense or even more frequent exposure to the virus. Therefore, scientists at Imperial College conclude that the answer to the question of whether immunity lasts for weeks or months is given on a case-by-case basis and depending on the patient. “Develops immunity to the coronavirus,” warns Professor Paul Eliot, head of the British program, who points out that distancing measures and the use of protective masks should be observed in this case as well. Harvard University School of Medicine, in collaboration with the University of Toronto, found that the highest levels of antibodies were detected in the body two to four weeks after the infection, but then began to subside. However, says lead researcher Risel , in general the antibodies remain high for four months after the infection and this is a serious sign that “for this period of time the body is protected” from a new infection. However, there is no definitive scientific evidence yet. Different estimates Immunity without vaccination? There are still not enough scientific conclusions. Obviously this has to do with the place and time of the research, but also the size of the sample. For example, the researchers found antibodies in 20% of those surveyed in New York, in Heinsberg the rate was 15%, and in Eagle 40%. The rates were different, although in all three cases we are talking about the first outbreaks in the US. In Germany, asymptomatic patients were studied in Guangzhou province, but only 37 people participated, and scientists concluded that the antibodies were missing just two months after the infection. University of Arizona detects high levels of antibodies even for five months after infection. Not considered definitive. Now Imperial College researchers find that from early June to late September, the proportion of the population with antibodies has dropped by 6%. at 4.4%. This indicates a very short duration of immunity. However, the results of many studies (such as that of Imperial College) are not considered definitive, as they are still in the preprint phase, ie not all the steps provided in the research protocols have been completed and in addition have not been published in a scientific journal. All researchers agree – the issue of coronavirus immunity has not yet been adequately investigated. Adhere to all measures In any case we must comply with restrictive measures, experts say. And yet, he must abide by all measures! From a legal point of view, there is no different treatment between those who have already become ill and the others. But also from a medical point of view, the observance of the restrictive measures is considered necessary for everyone. Firstly, because the question of the duration of immunity has not yet been definitively answered. Secondly, because several cases of new infection have become known shortly after the first infection. Finally, there are indications that some people do not even develop antibodies after the infection. An earlier study of about 380 US Navy men found no antibodies in 41% of those surveyed. A similar study by Fudan University in Shanghai found no antibodies in 6%. Simply put, we are not even sure that everyone who goes through the infection develops immunity, even for a short time. Source: Deutche Welle Follow it on Google News and be the first to know all the news See all the latest news from Greece and the world, at

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