Investigation of pathogenic Yersinia enterocolitica distribution in Jixian, Tianjin.

Objective To get the information of the distribution of pathogenic Yersinia enterocolitica in Ji County of Tianjin.Methods Yersinia enterocolitica strains were isolated from diarrhea patients and stocks stool and the biochemical identification,serotyping,PFGE analyses were conducted,PCR was used for virulence gene detection in 2006.Results Five strains of Yersinia enterocolitica were isolated from diarrhea patients and pig stools,all of them were serotype O:3,carring virulence genes ail,ystA,yadA,virF,and four of them had the same PFGE patterns with K6GN11C30021.Conclusion The isolates from patients and pigs belong to the same clone and pig may be the main infectious source of Yersinia enterocolitica for human beings in the county.