Objective. To evaluate the socioeconomic impact of COVID-19 in Rostov region. Material and methods. This article focuses on social and economic aspects of COVID-19. By estimating direct medical costs and gross domestic product (GDP) losses (sick leave days), we assessed the economic damage caused by the pandemic in Rostov region. When calculating direct medical costs, we considered per-case costs of completed outpatient and inpatient treatment and costs of laboratory testing (identification of coronavirus). When calculating the costs associated with paid sick Rostov region in 2020. Results. We found that COVID-19-associated direct medical costs and GDP losses (sick leave days) were 3,174,344,917.04 RUB. Almost half (42.7%) of direct medical costs were spent on outpatient treatment. GDP losses were 1,014,047,274.24 RUB. Conclusion. In addition to the direct impact on the health of vulnerable individuals, current pandemic will inevitably cause longterm socioeconomic consequences for both people and the economy. The assessment of the socioeconomic impact of COVID-19 is important to develop effective preventive and anti-epidemic measures, as well as to make optimal management decisions. Key words: GDP losses, pandemic, direct medical costs, PCR diagnostics, Rostov region, COVID-19

Objective: to study the sanitary condition of various environmental objects of the Rostov region and the degree of their contamination.Materials and methods: in the period from 2015 to 2019, more than 5600 sanitary and parasitological studies of environmental objects of the Rostov region were performed on the basis of the Rostov Research Institute of Microbiology and Parasitology: waste water and its precipitation, soil, water of open surface reservoirs. The work was carried out in accordance with the accepted normative documents.Results: it was found that 33.4 % of all tested samples were positive, and 1.4% of the samples contained viable eggs of various pathogens of helminthiasis and did not meet the requirements of regulatory documents.Conclusions: the results of the study indicate that the environmental objects of the Rostov region are polluted with parasitic pathogens and their unsatisfactory sanitary and parasitological condition.

The article presents the results of the investigations of Rostov Research Institute of Microbiology and Parasitology of Rospotrebnadzor which are directed towards the optimization of epidemiological surveillance of the larval helminthes infestations which are actual for the South of Russia: echinococcosis, trichinosis, dirofilariosis and toxocariasis. The implementation of the improved system of epidemiological surveillance of trichinosis has led to the absence of this disease cases among the population of the South and North-Caucasian federal districts in 2017. The optimization of preventive measures allowed to reduce the echinococcosis morbidity of the population in 2017 in the most unfavourable for echinococcosis region - Republic of Karachay-Cherkessia - twice compared to 2009. The results of sanitary-parasitological investigations - the most important part of epidemiological surveillance - indicate the potential risk of the population's infestation with parasitic pathogens through the objects of the environment in the South of Russia. The work of the researchers of the Institute together with the organizations of Rospotrebnadzor and other departments on the improvement of epidemiological surveillance resulted in the development of 12 standard and methodical and informative and methodical documents for the period of 2013-2018.

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