A total of 1, 169 rats, mostly
Rattus rattus, trapped in restaurants within the buildings of central Tokyo were examined for
Yersinia spp. in the large intestine during a period from January 1988 to March1990.
Yersinia spp.were isolated from 348 of 1, 169 rats (29.8%)
Y.enterocolitica from 175 rats (15.0%),
Y. frederiksenii from 177 rats (15.1%),
Y. intermedia from 49 rats (4.2%) and
Y. kristensenii from 12 rats (1.0%). Of 175 isolates of
Y.enterocolitica, 16 were of serotype 0: 5 (biotype 1, 8strains) and 0: 7, 8 (biotype 1, 8 strains)., None of the Y.enterocolitica isolates were of pathogenic sero-nor biotype and they had no pathogenic plasmids.
View full abstract