Perm Medical JournalPerm Medical Journal0136-14492687-1408Eco-Vector7150710.17816/pmj39194-103Research ArticleContamination of water bodies of Astrakhan region with helminth-protozoan infestationsNikeshinaTatyana V.<p>epidemiologist</p>astrfguz@yandex.ruArakelyanRudolf S.<p>Candidate of Medical Sciences, Associate Professor, Associate Professor of Department of Infectious Diseases and Epidemiology</p>rudolf_astrakhan@rambler.ruShendoGennadii L.<p>Chief Physician</p>rudolf_astrakhan@rambler.ruKovalenkoAnna V.<p>Chairman of Student Scientific Circle on Infectious and Parasitic diseases, fifth year student of Pediatric Faculty</p>kovalenko_bk_anna@mail.ruKiselevaAlexandra A.<p>Deputy Chairman of Student Scientific Circle on Infectious and Parasitic diseases, fifth year student of Faculty of Medicine</p>sanchos_0757@mail.ruArakelyantsOlga A.<p>second year student of Faculty of Medicine</p>rudolf_astrakhan@rambler.ruCenter of Hygiene and Epidemiology in Astrakhan RegionAstrakhan State Medical University150120223919410312062021Copyright © 2022, Nikeshina T.V., Arakelyan R.S., Shendo G.L., Kovalenko A.V., Kiseleva A.A., Arakelyants O.A.2022<p><strong>Objective.</strong> To study and carry out the retrospective analysis of water contamination with helminth-protozoan infestations in Astrakhan Region for 2010-2019.</p>
<p><strong>Materials and methods. </strong>During the analyzed period, 80962 samples taken from environmental objects were examined.</p>
<p><strong>Results.</strong> The percentage of samples that did not meet sanitary and parasitological indicators was 1.2 % (951 samples). The proportion of water samples collected and examined for parasitological parameters (eggs and larvae of helminths, cysts of pathogenic intestinal protozoa and oocysts of cryptosporidia) was 7.5 % (6033 samples). Water samples were taken from various water sources: water from centralized water supply, water from swimming pools, water from open reservoirs, waste water, water from wells, and bottled water.</p>
<p><strong>Conclusions.</strong> To conclude, the results were obtained indicating that the absence of positive findings in water samples from central water supply facilities indicates a high-quality filtration and prevention of these objects; the presence of cysts of dysentery amoeba and dead strongylid larvae in water samples, swimming pools, as well as the presence of eggs and larvae of helminths and cysts of pathogenic intestinal protozoa in open reservoirs, indicates fecal contamination of these objects; the presence of positive findings in samples of wastewater and water from wells shows that reliable deworming and disinfection of wastewater is not provided at these facilities.</p>Strongylidstoxocarsascarid eggswater sourceswaste waterСтронгилидытоксокарыяйца аскаридводоисточникисточная вода[Galimzyanov Kh.M., Mirekina E.V., Kuryatnikova G.K., Polukhina A.L., Frank G.N., Bedlinskaya N.R., Akmaeva L.R., Bikbaeva Yu.N., Nikeshina T.V. Modern clinical and epidemiological features of West Nile Fever in the Astrakhan region. Astrakhan medical journal 2018; 13 (4): 124–130 (in Russian).][Karpenko S.F., Galimzyanov H.M., Kasimova N.B., Rubalsky O.V., Mikhailovskaya T.I. Dynamics of clinical manifestations and catalase activity of blood serum in patients with coxyellosis younger than 50 years. Astrakhan medical journal 2012; 7 (2): 64–68 (in Russian).][Mirekina E.V., Galimzyanov H.M., Cherenova L.P., Bedlinskaya N.R. Analysis of the current epidemiological situation and clinical manifestations of Crimean hemorrhagic fever in the Astrakhan region. Astrakhan medical journal 2019; 14 (4): 36–45 (in Russian).][Mirekina E.V., Lazareva E.N., Khok M.M., Arakelyan A.S., Bedlinskaya N.R., Saidov R.T., siradegyan S.E. the state of the respiratory system in patients with Congo-Crimean hemorrhagic fever (ccgl). International journal of experimental education 2013; 3: 143 (in Russian).][Kuzmichev B.Yu., cherenova L.P. Clinical and epidemiological characteristics of rabies in the Astrakhan region. Scientific and methodological electronic journal Concept 2016; 1: 671–675 (in Russian).][Tverdokhlebova T.I., Demidova L.L., Farmer, I.V., Chernikov M.P., Dumbadze O.S., Kovalev E.V., Karpushenko G.V., Nenetskaya S.A. Sanitary-parasitological monitoring of environmental objects in Rostov region. Medical Bulletin of the South of Russia 2020; 11 (3): 79–83 (in Russian).][Kratenko I.S., Chegodaykina N.S., Pavlenko R.G. Sanitary and parasitological control of water supply in the Kharkiv region. Actual problems of transport medicine 2008; 4 (14): 078–081 (in Russian).][Labutkina E.Yu. Parasitic water pollution in the Vologda region. Bulletin of the St. Petersburg state medical Academy named after I.I. Mechnikov 2005; 6 (2): 184–185 (in Russian).][Dzholochieva M.K., Sharshenova A.A. on the application of the membrane filtration method in assessing the quality of drinking water in the Kyrgyz Republic. International journal of applied and fundamental research 2019; 6: 48–52 (in Russian).][Stepanenko E.A., Kanieva N.A., Grigorieva T.N. Monitoring studies of the sanitary condition of common perch (Perca Fluviatiluis L.) in open and closed reservoirs of the Volga basin. Bulletin of the Astrakhan state technical University. Series: Fish industry 2020; 2: 36–44 (in Russian).][MUC 4.2.1884-04. Sanitary-microbiological and sanitary-parasitological analysis of water of surface water bodies: methodical instructions. Moscow 2005 (in Russian).][MUC 4.2.2314-08. methods of sanitary and parasitological analysis of water: methodical instructions. Moscow 2008 (in Russian).][MUC 4.2.2661-10. Control Methods. Biological and microbiological factors. Methods of sanitary and parasitological research: methodical instructions. Moscow 2010 (in Russian).]