Abstract
The aim of this study was to investigate the current state of vertebrates populations and to determine their role in maintaining natural foci of zoonoses in the Stavropol Territory in 2015–2019. Material and methods. Organ suspensions and blood samples from small mammals and birds were studied using certified diagnostic test-systems for the markers of Crimean hemorrhagic fever, West Nile fever, hemorrhagic fever with renal syndrome, tularemia, and leptospirosis pathogens. The data were statistically processed using Wilson’s method. Results and discussion. Identified have been the main reservoirs of natural-focal infections in the Stavropol Territory at the present stage: birds – for the West Nile fever virus, mammals and birds inhabiting the areas of semi-desert landscape-geographical zone – for Crimean hemorrhagic fever agent. The main natural reservoir of orthohantaviruses in the Stavropol Territory is the common vole Microtus arvalis, which lives in all landscape-geographical zones. The circulation of tularemia and leptospirosis pathogens has been established throughout the whole territory of the region, the small wood mouse Sylvaemus uralensis is of the greatest epizootic significance. Findings indicate the need for further epizootiologic monitoring of Stavropol Territory in order to identify the biocenotic patterns of the pathogens’ existence and the reasons that determine the dynamics of the epizootic process and epidemic manifestations of natural foci. It is advisable to determine the sites of long-term monitoring over the number of carriers and vectors of natural-focal infections and strengthen the epizootiological control over the territory, especially during periods of seasonal activity in carriers and vectors of natural focal infections.
Highlights
Identified have been the main reservoirs of natural-focal infections in the Stavropol Territory at the present stage: birds – for the West Nile fever virus, mammals and birds inhabiting the areas of semi-desert landscape-geographical zone – for Crimean hemorrhagic fever agent
The circulation of tularemia and leptospirosis pathogens has been established throughout the whole territory of the region, the small wood mouse Sylvaemus uralensis is of the greatest epizootic significance
Таблица 1 / Table 1 Количество мелких млекопитающих, добытых на территории Ставропольского края (2015–2019 гг.) The number of small mammals caught in the Stavropol Territory
Summary
Цель исследования – изучение современного состояния популяций позвоночных животных и определение их роли в поддержании природных очагов зоонозов на территории Ставропольского края в 2015–2019 гг. Проведены лабораторные исследования суспензий органов и проб крови мелких млекопитающих и птиц с помощью сертифицированных диагностических тест-систем для выявления маркеров возбудителей Крымской геморрагической лихорадки, лихорадки Западного Нила, геморрагической лихорадки с почечным синдромом, туляремии, лептоспироза. Определены основные резервуары возбудителей природно-очаговых инфекций на территории Ставропольского края на современном этапе: для возбудителя ЛЗН – это птицы, возбудителя КГЛ – млекопитающие и птицы, обитающие в районах полупустынной ландшафтно-географической зоны. Показана необходимость дальнейшего проведения эпизоотологического мониторинга территории края с целью выявления биоценотических закономерностей существования возбудителей, а также причин, определяющих динамику эпизоотического процесса и эпидемического проявления природных очагов. Ключевые слова: природный резервуар инфекции, позвоночные животные, Крымская геморрагическая лихорадка, лихорадка Западного Нила, геморрагическая лихорадка с почечным синдромом, туляремия, лептоспироз, эпизоотологический мониторинг, Ставропольский край.
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