Occurrence and virulence patterns of O26, O103, O111 and O145 in slaughter cattleReport as inadecuate




Occurrence and virulence patterns of O26, O103, O111 and O145 in slaughter cattle - Download this document for free, or read online. Document in PDF available to download.

* 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





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


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



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