| prevalence of enteropathogenic yersinia in estonian, latvian, and russian (leningrad region) pigs. | tonsils of 457 fattening pigs from estonia (n = 151), latvia (n = 109), and the leningrad region of russia (n = 197) were collected between 2004 and 2007 to study the prevalence of enteropathogenic yersinia in slaughter pigs. yersinia enterocolitica and yersinia pseudotuberculosis were isolated by selective and cold enrichment. pathogenic y. enterocolitica and y. pseudotuberculosis were identified by pcr targeting the chromosomal genes ail and inv, respectively. the presence of the virulence pla ... | 2009 | 19580449 |