[The interrelationships between Vibrio cholerae and the infusorian Tetrahymena pyriformis].

The results of the study of interaction between V. cholerae of different virulence and T. pyriformis are presented.

[The characteristic properties of Vibrio cholerae eltor isolated from environmental objects on the territory of the former USSR during the 7th cholera pandemic].

The properties of 22,382 V. eltor strains isolated from environmental objects on the territory of different climatic and geographical zones during the period of 1970-1988 were studied. The study was made on the morphology of their colonies, the agglutinability of the strains by cholera O serum, type-specific serum and RO serum, their capacity for being lyzed by V.

[The ecological and geographical aspects of the spread of Vibrio cholerae in environmental objects].

The results of studies carried out over the period of 24 years have revealed that V. eltor is widely spread in different ecological systems over a considerable part of the territory of the former USSR in the temperate and subtropical climatic zones. The duration and seasonal character of the isolation of these bacteria depend on climatic and geographical conditions, and their isolation rate greatly depends on the epidemic situation.

[Dynamics of drug resistance of Vibrio cholerae isolated from surface water reservoirs in Siberia and the Soviet Far East in 1976-1990].

In the study on antibiotic resistance 1383 strains of El Tor Vibrio cholerae isolated from surface water reservoirs in 12 administrative territories of the Siberia and Far East within a period of 15 years were tested. The following antibiotics were used: ampicillin, streptomycin, monomycin, polymyxin, tetracycline, chloramphenicol, rifampicin and nalidixic acid. The resistance was unstable and its pattern was wave-like according to annual changes in the biological cycle.