Alexander Chepurnov, a professor of virology and expert at the Novosibirsk Federal Research Center of Basic and Translational medicine, decided to become a guinea pig to find out for how long antibodies will protect him from a repeat infection.
He developed the characteristic COVID-19 symptoms and also developed pneumonia later.
After recovering, he took a test that revealed the presence of antibodies, the outlet reported.
A second test three months later found that the antibodies had disappeared – though another infection did not occur despite his constant close contact with coronavirus patients.
After six months, he developed symptoms and was confirmed to be infected.
He said the disappearance of the antibodies will prevent people from developing a collective immunity
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