For citations:
Popova A.Yu., Ezhlova E.B., Mel’nikova A.A., Kutyrev V.V., Kozhanova O.I., Cherkasskaya T.S., Lyalina V.I., Smirnov V.S., Bugorkova S.A., Portenko S.A., Naydenova E.V., Shcherbakova S.A., Lomonosova V.I., Totolyan A.A. Characteristics of the Herd Immunity to SARS-CoV-2 in Residents of the Saratov Region under COVID-19 Epidemic. Problems of Particularly Dangerous Infections. 2020;(4):106-116. (In Russ.) https://doi.org/10.21055/0370-1069-2020-4-106-116