TASS informs about this with reference to Natalya Pshenichnaya, Deputy Director for Clinical and Analytical Work of the Central Research Institute of Epidemiology of Rospotrebnadzor.

“Even when most of the population is vaccinated, there will still be people susceptible to this infection,” Pshenichnaya said.

She explained that this may also be due to a decrease over time in protective antibody titers in some people. 

"The epidemic spread of this infection will stop, but periodic rises in incidence and outbreaks may remain for a number of years," said the epidemiologist.

She previously stated that COVID-19 could become a seasonal illness in the next two years.