THE EPIDEMIC PROCESS OF ACUTE RESPIRATORY VIRAL INFECTIONS IN THE LONGTERM DYNAMICS IN THE SVERDLOVSK REGION
Authors: Koltunov S.V. ,   Center for Hygiene and Epidemiology in the Sverdlovsk Region, Russian Federation, Ekaterinburg, Romanov S.V. , Ponomareva A.V. , Malchikov I.A. , Korotkova I.A. , Markaryan A.Yu. , Bolgarova E.V. , Slobodenyuk A.V. , Grigorieva Y.V. ,   The Center for Hygiene and Epidemiology in the Sverdlovsk Region, Russian Federation, Ekaterinburg,   Directorate of the Federal Service for Supervision of Consumer Rights  protection and Human Welfare in the Sverdlovsk Region, Russian Federation, Ekaterinburg,   Federal Budgetary Institution of Science "Federal Scientific Research Institute of Viral Infections "Virome" Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being, Russian Federation, Ekaterinburg; Federal State Budgetary Institution of Higher Professional Education «Urals State Medical University» of the Ministry of Healthcare of the Russian Federation, Russian Federation, Ekaterinburg,   Federal Budgetary Institution of Science "Federal Scientific Research Institute of Viral Infections "Virome" Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being, Russian Federation, Ekaterinburg,   Federal Budgetary Institution of Science "Federal Scientific Research Institute of Viral Infections "Virome" Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being, Russian Federation, Ekaterinburg,   Federal Budgetary Institution of Science "Federal Scientific Research Institute of Viral Infections "Virome" Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being, Russian Federation, Ekaterinburg,   Federal State Budgetary Institution of Higher Professional Education «Urals State Medical University» of the Ministry of Healthcare of the Russian Federation, Russian Federation, Ekaterinburg,   Federal State Budgetary Institution of Higher Professional Education «Urals State Medical University» of the Ministry of Healthcare of the Russian Federation, Russian Federation, Ekaterinburg
Published: July 2024

When predicting the epidemic situation in influenza, it is necessary to conduct a retrospective analysis that allows a correct assessment of the development of the epidemic process in a multi-year dy-namics. The aim of the study was to assess the epidemic process and etiology of influenza and other acute respiratory viral infections in the long-term dynamics among different age groups of the popu-lation. The annual reports of the branch of FBUZ "Center of Hygiene and Epidemiology in the Sverd-lovsk region" from 2015 to 2023 were analyzed. Laboratory diagnostic studies were carried out by PCR method (a total of 46952 patients were examined). It was found that influenza epidemics were polyethiologic and took place with simultaneous participation of influenza viruses A(H1N1)pdm09, A(H3N2) and B. In the long-term dynamics there was a tendency to instability of the epidemic process: in 2020-2021. observed a sharp decline in the circulation of influenza viruses to their complete absence. Against this background, the group of high risk of infection, which before this period were children under 6 years of age, was replaced by the older age group (15> years). Thus, the high pro-portion of viruses of non-influenza etiology, involved in the epidemic process, indicates the need for an operational approach to the development of tactics to protect the population from these viruses by means of nonspecific prophylaxis in epidemic seasons.