Occurrence and virulence patterns of O26, O103, O111 and O145 in slaughter cattleReportar como inadecuado




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* Corresponding author 1 Faculty of Veterinary Medicine 2 Department of Microbiology

Abstract : The study attempted to investigate the occurrence of non-O157 serogroups O26, O103, O111 and O145 in cattle at slaughter and to determine the virulence potential of these isolates. A total of 399 fecal samples were analyzed by selective plating and isolates were characterized by polymerase chain reaction PCR for the genes and EHEC . Immunomagnetic separation IMS is required to increase the efficiency of the isolation procedure. O26, O103, O111 and O145 were recovered from 24 6% fecal samples. O26 and O103 seemed to be more abundant in slaughter cattle than O111 and O145. Sixteen out of the 24 isolates harbored genes. All -positive isolates harbored one or more additional virulence factors. Six out of the 8 -negative isolates harbored and-or EHEC , whereas 2 strains harbored none of the tested virulence genes.

Keywords : non-O157 VTEC slaughter cattle feces





Autor: M.A. Joris - D. Pierard - L. De Zutter -

Fuente: https://hal.archives-ouvertes.fr/



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