Results of monitoring natural focal infections in the Rostov region in 2024

Objective : to analyze epizootic and epidemic manifestations of naturally occurring focal infections (tularemia, ixodes tick-borne borelliosis, West Nile fever, Crimean hemorrhagic fever, Q-fever, leptospirosis, yersiniosis, hemorrhagic fever with renal syndrome) in the Rostov region in 2024. Materials and methods : the studies were conducted in accordance with current regulatory documents. The objects of the study were small mammals, birds, blood-sucking arthropods, environmental objects, and donor blood serum. Studies to find antigens of infectious disease pathogens were conducted using solid-phase ELISA and PCR. Results : The nosological profile of natural focal infections has been determined, which includes six main nosological units: West Nile fever; Ixodes tick-borne borreliosis, Q-fever, Crimean hemorrhagic fever, leptospirosis and tularemia. In a crosssectional seromonitoring study, 754 residual blood serum samples from a conditionally healthy population were tested for the pathogens of the studied infections. As a result of comprehensive epizootological studies, a modern range of small mammals has been established, consisting of 12 species of rodents and insectivores. Conclusion : The analysis of the epidemiological situation in 2024 confirmed the presence of natural foci of dangerous infectious diseases in the Rostov region.