The Center for Infectious Diseases Control, Georgian Ministry of Health, isolated 2,493 Yersinia enterocolitica and Y. enterocolitica-like strains, 22 Y. pestis strains, and 21 Y. pseudotuberculosis strains from 130,574 clinical and environmental samples. Analysis of 100 Y. enterocolitica and Y. enterocolitica-like strains showed none to be within traditional pathogenic biogroups or serogroups, and none carried genetic markers for virulence. However, some strains were enterotoxigenic in infant mice, while others were associated with prolonged carriage in adult mice.
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