“People acquire immunity either as a result of a transferred infection in any form: asymptomatic, mild, moderate, or with the help of a vaccine - the mechanism is the same”, - the expert noted in an interview with Sputnik radio.
According to the observations of the developers of the Russian Sputnik V vaccine, after vaccination, the level of antibodies in the human body is significantly higher6 than in those who have already had a coronavirus infection. But Butenko is sure that the antithered titer is not the only indicator of immunity.
"Even though the antibody titer is lower after a "re-illness", at an extremely low level or after a certain period of time, antibodies disappear, this does not mean that a person can get sick. Because this is an acute viral infection, and in general it is difficult to find an example when, after acute viral infections, people remain susceptible and transmit the same infection again. This means that there must be immunity. Moreover, there is such an effect as immunological memory - a meeting with a similar pathogen leads to the rapid development of high levels of antibodies, a protective effect is created", - explained Butenko.
He also added that there is also such an effect as immunological memory. That is, meeting with such a pathogen leads to the rapid development of high levels of antibodies, which causes a protective effect.
Earlier, Australian researchers conducted a study of the blood of patients with COVID-19 and concluded that the infected have immunity to protect against re-disease for at least eight months.