Open AccessNATURAL AND SOCIAL FACTORS OF OPISTORCHOSIS CIRCULATION IN WEST KAZAKHSTAN REGION
Author(s) -
Nurzhanova,
Karmaliyev,
Sengaliyev
Publication year - 2021
Publication title -
theory and practice of parasitic disease control
Language(s) - English
DOI - 10.31016/978-5-6046256-1-3.2021.22.401-408
Subject(s) - opisthorchiasis , floodplain , geography , population , ecology , epizootic , fishery , biology , medicine , virus , demography , pathology , virology , sociology
The formation and course of epidemic and epizootic processes of opisthorchiasis is influenced by natural-ecological and socio-economic factors. Geographical position of the Ural River basin, the proximity of the Volga focus, species diversity and abundance of commercial species of cyprinids, ecological conditions in the Ural basin, in floodplain water bodies and in small rivers of West Kazakhstan region, connected with the Ural River, the dietary habits of people, intensive migration of population create optimal conditions for the functioning of parasitic system of opisthorchiasis and contribute to the spread of this invasion among the population of the Ural region.The risk of infection with opisthorchiasis at the natural and social levels remains high. The territory of West Kazakhstan region has the following natural and ecological conditions: it is confined to the Ural-Caspian lowland. Surface waters of West Kazakhstan region are represented by rivers, lakes and reservoirs. In the Ural River and its basin, there are many mollusks Bithynia leachi and fish species, among which there are potential carriers of opisthorchian metacercariae – bream, ide, dace, redfin, tench, wild carp, carp, white bream, roach, asp, prussian and crucian carp, chub, minnow, sabre fish, blue bream. In the region, the incidence of opisthorchiasis in people is annually recorded. A significant part of the infected population lives in settlements located along the banks of the Ural River and its floodplain reservoirs.