Isolation, identification, assessment of pathogenecity and antibiotic sensitivity of Yersinia enterocolitica isolates from pigs

Direct isolation of Yersinia enterocolitica and Yersinia pseudotuberculosis from meat.

Studies were done to determine the usefulness of dilute alkali (KOH) treatment of meat samples for direct isolation of Yersinia enterocolitica and Yersinia pseudotuberculosis, without enrichment. Virulent Y. enterocolitica and Y. pseudotuberculosis in pork contaminated with 10(2), 10(3), and 10(4) cells per g survived the direct KOH treatment and were never recovered by using KOH postenrichment...

Isolation of Yersinia enterocolitica from swine.

Data pertaining to 20 strains of Yensinia enterocolitica isolated from the cecal content of swine slaughtered at Toronto Abattoirs are presented. Fifteen of 20 cultures belonged to the two predominant human serotypes in Ontario (i.e., serotype O:3 and O:5,27.) Seven cultures of Y. enterocolitica O:3 belonged to the "Canadian" human phage type 9b. These findings are further proof that swine are ...

Antibiotic Resistance and Β-lactamases of Yersinia Enterocolitica Isolated from Pigs in Poland

Sixty-two isolates of pig-derived Yersinia enterocolitica belonging to 1A and 4 biotypes and non-typeable isolates were subjected to antimicrobial resistance testing by the disc diffusion method. The presence of β-lactamase A (Bla-A) and B (Bla-B) was detected by the double disc diffusion test, and the β-lactamase genes blaA and blaB in these isolates were detected by PCR. The isolates were res...

Yersinia enterocolitica isolates from humans in California, 1968-1975.

This paper reports on the serological and biochemical characteristics of 24 human isolates of Yersinia enterocolitica submitted to the California Department of Health from 1968 through 1975. Nine different serotypes were represented. The majority of strains were serotype O:8 (six strains) and serotype O:5 (five strains). Sources of the isolates included feces (12 cases), blood (3), sputum or th...

Identification of pathogenic serotypes of Yersinia enterocolitica.