[Potential hosts and routes of the circulation of Yersinia pseudotuberculosis in an aqueous ecosystem].

The interaction between Y. pseudotuberculosis and different representatives of the aqueous and, partially, soil biocenosis was studied. The study revealed that invertebrates of the plankton and benthos (water fleas, cyclops, mollusks, Oligochaeta, larvae of insects), as well as fish and higher plants, ensured the prolonged existence of Yersinia in water. Thus hydrobiotic organisms were to be regarded as potential natural hosts of Y. pseudotuberculosis. A suggestion was made that fish, the final link of some alimentary chains, could present epidemic danger as a food product for human consumption.