Introduction.The study of the elemental status of the population of individual regions of the Russian Federation with the purpose of scientific development and implementation of measures for elimination of revealed elementosis is a promising direction for preventive medicine.The aim of the studyis to study the elemental status of the adult able-bodied population of the Republic of Buryatia, which was part of the Siberian Federal district (SFD) until 2018.Materials and methods.The analysis was performed by inductively coupled plasma mass spectrometry (ICP-MS) on the basis of the accredited laboratory of “Center of biotic medicine”. (Moscow; ISO 9001: 2008 certificate 54Q10077 from 21.05.2010). The content of chemical elements in the hair of 130 adults (102 women and 28 men) aged 25–50 years was studied. This indicator serves as an indicator in assessing the impact of the environment on the human body. Methods of nonparametric statistics were used for mathematical processing of the data.Results.For women living in the Republic of Buryatia, the maximum values of Zn, increased levels of Cu, Li, Si were revealed; for men — the maximum values of Mg, Cr, Si, increased levels of P, Li, Se, V, Pb. Minimum values were found for P, Fe, V. Elemental status indicates a significant degree of prevalence of essential trace element deficiencies and electrolyte imbalance. The obtained data can be used as reference values for the content of chemical elements in the hair of adults living in the Republic of Buryatia.Conclusions:Elemental analysis of the population of the Republic of Buryatia indicates imbalances among the adult working-age population.

Introduction. The high incidence of diphyllobotriosis in the coastal areas of Lake Baikal is an objective reflection of the socio-hygienic problems of the population of the Republic of Buryatia. In ensuring sanitary and epidemiological well-being in the Republic of Buryatia, there are many topical and territory-specific hygienic problems related to food safety issues. One of the main tasks is to prevent cases of diphyllobotriosis associated with the consumption of aquatic bioresources caught in the reservoirs of Transbaikalia, including the Baikal omul, in connection with the preservation of the risk of its development from the impact of a complex of socioeconomic, biological and environmental factors of the environment.The purpose of our study was to investigate the regional features of diphyllobothriosis with an analysis of the current situation on infection of fish (the second intermediate hosts of the genus diphyllobothrium) with diphyllobothrium plerocercoids.Material and methods. The database of the Republican information Fund for social and hygienic monitoring of the Department of Federal Service for Oversight of Consumer Protection and Welfare for the Republic of Buryatia and the Center for hygiene and epidemiology in the Republic of Buryatia was used as sources of information. The study was conducted using statistical, analytical, mathematical methods, as well as comparative analysis.Results. According to our research, the course of the epidemic process was found to be influenced by a complex of environmental factors. This high anthropogenic load of the Selenga river and lake Quill, where the main causes are the failure modes of nature-protection and sanitary-protective zones of the lake, the unauthorized disposal of waste production and consumption, inadequate operation of water purification facilities, deterioration of the sanitary-technical condition of water supply and sewage networks.Conclusion. The high incidence of diphyllobotriosis in the coastal areas of lake Baikal is an objective reflection of the socio-hygienic problems of the population of the Republic of Buryatia.

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