Antibodies last 4 months in the body

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He Findlandia National Institute of Health and Welfare (THL, for its acronym in Finnish) has published a study on Tuesday stating that antibodies from COVID-19 infected patients remain in the body for at least four months after contagion. And, in addition, they grant immunity during this period. The research, which has been prepared in collaboration with the city of Helsinki, analyzed, as of March, a total of 129 people from 39 families, in which at least one of their members had tested positive for covid-19 in a test PCR.

The study confirmed that 63 of the 64 people who tested positive had developed antibodies within the first month of infection. Antibodies were also found in 17 other individuals who had tested negative in the PCR test. According to THL, the amount of antibodies in those infected decreased during follow-up, although four months after infection almost all individuals continued to have antibodies.

Merit Melin, director of research at THL, said in a statement that “the results of this study confirm the evidence that the antibodies produced after a natural infection and their potential immunity would last at least four months.” Furthermore, he admits that he still it is not known with certainty which type of immunity protects the human body against a new infection by covid-19, although experts believe that it is the one provided by neutralizing antibodies.

Results are not final

It is not known for sure how long specific antibodies to covid-19 persist in the body, as research to date has produced very mixed results.

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