The informally raw milk and Kareish cheese sold in Qena city (Upper Egypt) were analyzed to determine the presence of toxigenic E.coli.The isolates were screened for the presence of verotoxigenic E.coli (VTEC) and enterotoxigenic E.coli (ETEC) by Polymerase Chain Reaction (PCR).Bio-resistance to antimicrobial agents was evaluated by the disk diffusion method.E coli were recovered from 38 (76%) of ...