Prevalence of Escherichia coli O157:H7 in gallbladders of beef cattle |
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Authors: | Reinstein S Fox J T Shi X Nagaraja T G |
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Institution: | Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506-5606, USA. |
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Abstract: | Gallbladders and rectal contents were collected from cattle (n=933) at slaughter to determine whether the gallbladder harbors Escherichia coli O157:H7. Both gallbladder mucosal swabs and homogenized mucosal tissues were used for isolation. Only five gallbladders (0.54%) were positive for E. coli O157:H7. Fecal prevalence averaged 7.1%; however, none of the cattle that had E. coli O157:H7 in the gallbladder was positive for E. coli O157:H7 in feces. Therefore, the gallbladder does not appear to be a common site of colonization for E. coli O157:H7 in beef cattle. |
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