MOSCOW, June 24. /TASS/. There is still little data on revaccination, but the available information indicates that there are no serious side effects from vaccination after having COVID-19 or after being revaccinated, Elena Volchkova, the holder of chair in infectious diseases at the Sechenov University, told TASS.

"Actually, we still have little data on vaccination, but what we have suggests that no especially severe side effects have been recorded after revaccination," she said.

At the same time, Volchkova added that those, who survived COVID-19, face quite serious consequences, and a second encounter with the infection can become fatal. "That is why, of course, vaccination is preferable in this case," she noted. "There is not enough data yet on what antibody titer is fully protective".

According to the expert, in Israel, for example, no one looks at the antibody titer, and people are vaccinated 3-6 months after the disease. That especially concerns senior citizens and individuals with chronic diseases. "Experience shows that antibodies in persons, who had COVID-19, may disappear six months later, or the titers may drop significantly," she explained.

Russian Health Minister Mikhail Murashko earlier said that the Health Ministry would soon issue recommendations regarding revaccination against coronavirus. He noted that when COVID-19 cases are on the rise, revaccination is possible within a period of six months for those, who had the disease, and those, who were vaccinated earlier.