The isolation of Esherichia coli O157:H7 in milk and feaces of cattle in eagean region and determination of their verotoxin

The Isolation of Escherichia Coli O157:H7 in milk and feaces of cattle in Eagean Region and determination of their verotoxinEscherichia coli O157:H7 was first identified as a human pathogen following two geographically separate outbreaks of hemorrhagic colitis in the United States in 1982. E. coli O157:H7 was one of the most common enteric pathogen isolated. Persons infected with E. coli O157:H7 may be asymptomatic, symptoms may include diarrhea, bloody diarrhea, hemolytic-uremic syndrome, and thrombotic thrombocytopenic purpura. Shiga-like toxin-producing Escherichia coli (STEC), also known as Vero toxin-producing E. coli (VTEC), infection in humans is food-borne and that cattle act as a reservoir for STEC infection. The aim of this study was, investigate the presence of E. coli O157:H7 in milk and faeces of cattle that taken from Aydın and İzmir region and determine their verotoxin production capability.In this study, 4 (%1,3) E. coli O157:H7 isolated from 150 milk and 150 faeces. Two E. coli O157:H7 isolated from both milk and faeces sample and we determine that one of the isolate taken from milk produce VT1.Key Words : Cattle, E.coli O157:H7, İsolation, Verotoxin