SARS-CoV-2 Seroprevalence Structure of the Russian Population during the COVID-19 Pandemic.

The SARS-CoV-2 pandemic, which came to Russia in March 2020, is accompanied by morbidity level changes and can be tracked using serological monitoring of a representative population sample from Federal Districts (FDs) and individual regions. In a longitudinal cohort study conducted in 26 model regions of Russia, distributed across all FDs, we investigated the distribution and cumulative proportions of individuals with antibodies (Abs) to the SARS-CoV-2 nucleocapsid antigen (Ag), in the period from June to December 2020, using a three-phase monitoring process. In addition, during the formation of the cohort of volunteers, the number of seropositive convalescents, persons who had contact with patients or COVID-19 convalescents, and the prevalence of asymptomatic forms of infection among seropositive volunteers were determined.

[Influence of ambient air pollutants released by metallurgic enterprises on public].

State of ambient air in resident area in Norilsk city, on background of considerable and persistently high releases of chemical pollutants by major metallurgic industrial enterprises, forms risks for public health--that is supported by highly prevalent diseases of affected organs and systems in the city residents. Preserving sanitary epidemiologic well-being of this territory requires specification and implementation of hygienic, organizational, social measures to protect population dwelling in unfavorable regions.

[SMOKING PREVALENCE AND RISK FOR THE SMOKING- RELATED LOSS OF HEALTH OF THE POPULATION OF THE KRASNOIARSK KRAĬ].

There are presented data on the consumption of tobacco in the Krasnoyarsk Territory in the context of age-sex and social groups. Representatives of the workers specialties, students were shown to smoke more frequently, men smoke 2 times more often than women. For the population of the Krasnoyarsk Territory there were evaluated carcinogenic and non-carcinogenic risks for the loss of health, related with the factor of tobacco smoking.