[The entry portals and routes of Yersinia pseudotuberculosis penetration into the warm-blooded organism].

This work presents data indicating that Y. pseudotuberculosis population, cultivated at lower temperature (6-8 degrees C), has a high potential of cellular and tissue invasiveness. Pseudotuberculosis has been experimentally shown to start as generalized infection due to the rapid (during 10-15 minutes) penetration of the infective agent through the epithelium of the mouth cavity, the small intestine, the urinary bladder, conjunctiva, pulmonary alveoli and vascular walls into the blood and then into internal organs. The data, obtained in this study, on the penetration of Y. pseudotuberculosis through any mucous surfaces in different species of warm-blooded animals are indicative, to a considerable extent, of the fact that this process occurs due to the action of nonspecific mechanisms.