| laboratory investigation of virulence among strains of yersinia enterocolitica and related species isolated from pigs and pork products. | eighty strains of yersinia enterocolitica and related species isolated from slaughtered pigs and pork products were tested for possession of virulence-associated phenotypes by employing 12 in vivo and in vitro assays. the isolates could be broadly divided into two groups: (i) strains belonging to pathogenic bioserotypes of y. enterocolitica that displayed virulence-associated characteristics in most or all assays and (ii) strains belonging to y. enterocolitica biotype 1a and to related species t ... | 1992 | 1521193 |