[Study and prevention of mixed infections, transmitted by Ixodes ticks]

The paper deals with the main aspects of mixed infections transmitted by Ixodes ticks: the biocenotic bases of existence of natural focal mixed infections, the magnitude of their spread, the indices of mixed infestation and the relationships of different causative organisms with Ixodes ticks and reservoir hosts, the spatial relations of mixed parasitic systems, the incidence of tick-borne mixed infections, the problems of their diagnosis and clinical manifestations, as well as the tasks of complex prevention. It is concluded that there is a necessity of applying the comprehensive synecological approach in studying the processes occurring in the focal ecosystems, which requires a definite methodological and structural rearrangement in science organization.