Vaccine safety against Covid-19 is a big question at the moment. While researchers are continually searching for variants that are more or less resistant to currently circulating vaccines, the efficacy of the vaccine remains the great unknown. A person thus develops antibodies when they are vaccinated or when they are contaminated with the virus: thus they acquire a certain immunity to COVID-19.

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Scientists have taken a keen interest in the phenomenon of “superimmunity”: in certain situations, certain people are the object of optimal protection against viruses. According to a US study published last Thursday, December 16 in the journal Journal of the American Medical Association (JAMA), A person who has been vaccinated against the virus and who has subsequently become infected is likely to acquire this “superimmunity”.

1000% increase in antibodies

In practice, according to our partners ScenesIn this article, the researchers took a closer look at two groups of patients: the first group of people with a complete vaccination schedule who were infected with Covid-19 and the second group of people who had also completed their vaccination schedule but who had never been infected. with virus.

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The first group developed a particularly remarkable amount of antibodies: “an increase of 1000% and sometimes even 2000%, so a really high immunity. It’s almost a superimmunity”, commented on the study’s exit. Professor Fikadu G. On Tafesse, Publishing. Last summer, a study by the Centers for Disease Control and Prevention concluded that vaccination halved the risk of reinfection in people who were infected for the first time.