The importance of wild animals and dogs in the formation and functioning of the natural focus of echinococcosis in the territory of Karachay-Cherkessia

Abstract

The epizootic and epidemiological situation of echinococcosis of wild animals, dogs and humans has been studied according to reporting data and based on our own research. It has been established that echinococcosis is widespread in the territory of the Karachay-Cherkess Republic. As a result of the autopsy of wild carnivores, it was found that the extent of echinococcosis invasion ranged from 20 to 50 % with an invasion intensity from 65,0 to 213,0 specimens/animal, in wild artiodactyls and rodents – from 14.3 to 30.0 % with AI fluctuations from 1,0 to 5,0 specimens/ animal. The average long-term incidence of echinococcosis in the population of Karachay-Cherkessia for 2000-2017, according to the Rospotrebnadzor Department for the Republic, is 4,0±0,4 (per 100 thousand population). In 2017–2018, 7 cases were registered, in 2019 – 4 cases of the disease, in 2021 – 2 cases, and in 2020 cases of echinococcosis in humans were not registered.