Petersburg has achieved collective immunity. What's next?

St. Petersburg has reached 100% collective immunity from covid-19 (including vaccinated and recovered citizens), Andrey Sarana, First Deputy Chairman of the HEALTH Committee, said on the St. Petersburg TV channel on February 15. However, the official noted that the quality of herd immunity raises questions. “Due to the fact that many of us were ill more than six months ago and a certain number of people were vaccinated more than six months ago, it turns out that it (collective immunity - ed.) may not be of very high quality, because some of us are already losing it . Therefore, we continue to urge our citizens to get revaccinated.”

RBC Petersburg asked experts what the achievement of herd immunity by the city testifies to and whether the city should remove the “anticoid” restrictions.

Antonina Oblasova, biologist, DIRECTOR of the ANO for the development and support of vaccination "Collective Immunity":

Herd immunity is a population phenomenon. It consists of separate bricks - immunity to any infection of people living in a certain territory and interacting with each other. If most people do not become infected and do not infect others, then those who do not have immunity to infection are indirectly still protected, since the likelihood of them encountering the disease becomes unlikely.