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Enteropathogenic EPEC and Shigatoxigenic Escherichia coli STEC in broiler chickens and derived products at different retail stores



Enteropathogenic EPEC and Shigatoxigenic Escherichia coli STEC in broiler chickens and derived products at different retail stores



Food Control 23(2): 0-355



Enteropathogenic (EPEC) and Shigatoxigenic Escherichia coli (STEC) are foodborne pathogens that cause potentially fatal infant diarrhea and hemolytic uremic syndrome, respectively. We investigated the presence of intimin and Shiga toxin encoding genes, as indicators of EPEC and STEC presence in cloacae and chicken products. The analyzed products were hamburgers, giblets and carcasses obtained from poultry and butcher shops. EPEC contamination predominated over STEC contamination in cloacae and chicken products, although some differences were detected when the kind of food or shop was taken into account. In particular, among chicken hamburgers we found a greater proportion of EPEC than STEC positive. Highlights: We detected Shiga toxin and intimin encoding genes in cloacae from chickens and in chicken products. The number of positive samples for each gene differed among chicken products and types of shops. STEC detection in hamburgers could indicate cross-contamination during handling at butcheries. EPEC contamination may result from contamination at slaughter as it was detected in cloacal samples.

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Accession: 036168583

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DOI: 10.1016/j.foodcont.2011.07.030


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