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The revalence of Escherichia coli 0157:H7, Listeria monocytogenes and Campylobacter spp. on bovine carcasses in Isfahan, Iran

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This study was carried out to determine the prevalence of food borne pathogens, Escherichia coli, E. coli OI57:H7, Listeria monocytogenes and Campylobacter spp. on slaughtered cattle in Isfahan, Iran. A total of 203 cattle carcasses were sampled by surface section of neck meat taken immediately after slaughter and analyzed using microbiological examinations. Suspected colonies to E. coli 0 157:H7 were confirmed by a specific polymerase chain reaction method (peR) . The results showed that the contamination rate of samples to E. coli and E. coli 0157:H7 were 42.4 and 6.4%, respectively. Seasonal distribution showed that the highest prevalence of E. coli and E. coli 0157:H7 occurred in summer samples. Six carcasses carried L. monocytogenes whereas Campylobacter spp. were not detected on any carcasses. The results indicated that prevalence of E. coli and E. coli 01 57:H7 was high on bovine carcasses in Isfahan. This condition should be considered as a probable hazard for human health.

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