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Prevalence and Antibiotic Resistance Pattern of Escherichia coli Isolated from Raw Dairy Milk
(2018) Hasan, Abul; Reza, Md. Ahsanur; Rume, Farzana Islam; Meher, Mirza Mienur; Parvej, Md Shafiullah; Anower, Mostafa
E. coli is one of the most important food borne pathogen, which could be transmitted bymilk and milk products. To assess the role of dairy milk as the source of drug resistant E.coli, we examined 50 raw dairy milk samples (25-farm milk + 25-market milk) fromsome selected areas of Bangladesh by cultural, morphological, biochemical andantimicrobial sensitivity tests. In the preliminary observation, the mean total aerobicmesophilic count of market and farm raw milk samples were 8.98 and 8.68 log CFU/ml,while mean coliform count were 4.20 and 3.03 log CFU/ml respectively. Thirty-three E.coli isolates were recovered from collected samples (66% 33 of 50) and this pathogenwas more prevalent in market milk (76%, 19 of 25) than farm milk (56%, 14 of 25). Inaddition, most of the isolated E. coli exhibited resistance against ampicillin andcefotaxime. This result shows that, the raw dairy milk and its products could be a sourceof human drug resistant E. coli.