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What is the probability of reinfection with Covid-19?

Author: Tursunova Balkadisha

Translator: Turarova Aiym

Сopy editor: Kigbaeva Kamila


      Coronavirus infection is relatively "new" and unexplored for science and medicine, therefore, the immune response to the introduction of a foreign agent remains not fully understood.


      Immunity is usually divided into innate, which is always the first to react to any agent introduced into the body, causing a response, and specific, or adaptive immunity, that is, a cellular response that attacks only cells infected with a virus. It takes about 10 days for the production of antibodies, which then act on the virus.


      It is known: the stronger the adaptive (specific) immunity (attacks only cells infected with the virus), the longer memory cells will be present in the body. Accordingly, it is impossible to predict whether a cellular response will take place in a given infection, because it is not known how the body will react to the coronavirus.


      So, for example, when vaccinated against measles, lifelong immunity is preserved, while a person can get sick with respiratory syncytial infection two to three times a year. In this case, everything is individual and unpredictable, depending on the reactive properties of our immunity, including SARS-CoV-2. According to the researchers, even if there are no antibodies to CoViD-19 in a laboratory study, this does not mean that a person is not sick and cannot infect anyone.


      According to the authors of the work, the state of people's immunity is now of great importance: it is more likely that strong, healthy young people will suffer an infection in a milder form, while the elderly with chronic diseases and concomitant background are at risk.