THE ROLE OF PIGS AS PHARYNGEAL CARRIERS OF HUMAN PATHOGENIC YERSINIA ENTEROCOLITICA STRAINS

THE ROLE OF PIGS AS PHARYNGEAL CARRIERS OF HUMAN PATHOGENIC YERSINIA ENTEROCOLITICA STRAINS

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From March 2007 to January 2008, a total of 170 multimatic 255 tig kit pigs at slaughter were tested for Y.enterocolitica contamination in tonsils tissue.The animals came from 125 different farms located in four regions of Northern Italy.

Y.enterocolitica was isolated rosaliac ar intense visible facial redness serum from 19 out of 170 (11.2%) tonsils samples.

The prevalent bio-serotype (68.4%) was 4/O:3, followed by bioserotypes 1A/O:8 (15.8%), 1A/O:5 (10.

5%) and 4/O:8 (5.2%).Among bio-serotype 4/O:3, several strains possessed yadA, ail and ystA virulence genes.