“The fact is that in Russia there are electronic registers, there are exactly the same registers for recording morbidity abroad.

I mean the leading countries - the USA, Europe, Israel.

And according to these registers, according to ours and foreign ones, we naturally see a decrease, and not a dramatic drop, but a decrease in the effectiveness of vaccination six to eight months after the first application, ”Logunov said.

According to him, the introduction of the third dose of the vaccine leads to the return of the decreased indicators to the initial level and even to an increase in the effectiveness indicators by 1.6 - 2 times compared with the first vaccination.

As the head of state noted, more than 50 million Russians have already been vaccinated with the Sputnik V coronavirus vaccine.