| shiga toxin-producing escherichia coli o157:h7 in milk and milk products in ogun state, nigeria. | shiga toxin producing escherichia coli (stec) o157 is a major cause of food-borne illnesses in humans. this study investigated the presence of stec o157 in milk and milk products in ogun state, nigeria. of a total of 202 samples 10 (5%) were positive for stec o157 including 1 (2%) of 50 raw milk samples, 3 (6%) of 50 samples of fresh local cheese, 1 (2%) of 50 samples of fried local cheese and 5 (9.6%) of 52 fermented milk samples. there was no significant difference (p>0.05) in the prevalence o ... | 2014 | 25273960 |