[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. The intensity and seasonal character of the isolation of V. eltor have been shown to depend on the character of the ecological system. For some water reservoirs definite biotic and abiotic factors capable of influencing the isolation rate of V. eltor have been determined, but no general regularities involving the above-mentioned factors and constantly ensuring such influence have been established.