[The ecological and epidemiological aspects of the spread of Vibrio parahaemolyticus in a freshwater region].

For the first time Vibrio parahaemolyticus have been isolated in this country in a freshwater region both from patients with the diarrheal syndrome and from environmental objects. In the region of the lower course of the Volga morbidity in acute enteric infections (AEI) caused by these vibrios may reach 9.1% of all AEI cases in some years. The formation of an ecological niche suitable for the circulation of these bacteria has taken place in the Volga delta. All these facts indicate that freshwater reservoirs and their hydrobios present potential epidemic danger and, therefore, the possibility of sporadic AEI morbidity and outbreaks of infections caused by V.parahaemolyticus exists in freshwater regions with natural and climatic conditions similar to those of the region of the lower course of the Volga.