[Approaches to predicting the diphyllobothriasis and opisthorchiasis situation in connection with the reconstruction of the water supply economy in the USSR].

The effect of some physical-geographical and anthropogenic factors on the circulation of Diphyllobothriidae and Opisthorchis at the hydrotechnical objects of various regions of the USSR is analysed. It is emphasized that these factors affect primarily the first intermediate hosts of parasites. In opisthorchiasis changes in the intensity of the epidemic process may take place within the limits of mollusca distribution area.

[The prognosis for the opisthorchiasis situation in an area influenced by hydraulic engineering works].

Basing on the materials of many years observation, literature and their own data, the authors consider expert prognostication methodology in regard to opisthorchiasis in hydro construction regions as exemplified by the Shidertinsk focus and Irtysh-Karaganda canal. Analysis of prognostication signs and alterations connected with them showed that relatively satisfactory situation concerning opisthorchiasis for 10-year period of channel exploitation was provided by measures aiming at water bodies protection, by changes in ichthyofauna, and by breaking the connection of water voles with fish. Further prognosis puts you on guard because of releasing a strict sanitary regime in coastal region due to opening the channel for population and fishery development.

[Assessment of the heminthologic situation along the route of the Irtysh-Karaganda canal. Public health helminthologic and malacologic studies].

Results of sanitary-helminthological study of soil and population density of the Opisthorchis first intermediate hosts--Mollusca--in the water bodies of the Irtysh-Karaganda canal area are presented. Mean number of soil samples containing Opisthorchis ova constituted 11.76 +/- 2.