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  • Title: Prevalence and characteristics of Escherichia coli O26 and O111 from cattle in Korea.
    Author: Jeon BW, Jeong JM, Won GY, Park H, Eo SK, Kang HY, Hur J, Lee JH.
    Journal: Int J Food Microbiol; 2006 Jul 15; 110(2):123-6. PubMed ID: 16682093.
    Abstract:
    Enterohemorrhagic Escherichia coli (EHEC) is an important cause of diarrhea, hemorrhagic colitis and hemolytic uremic syndrome worldwide. E. coli O26 and O111 are the serotypes most frequently isolated from human EHEC infections in Korea. Cattle are considered to be the major sources of E. coli O26 and O111. This study investigated the prevalence of E. coli O26 and O111 in fecal samples from cattle in Korea from April 2002 to March 2004. Out of 809 samples, 54 (6.67%), 37 (4.57%), and 16 (1.98%) tested positive for O26, O111, and both O26 and O111, respectively. Most of the E. coli O26 and O111 strains were isolated from May to October of each year. PCR analysis of the EHEC virulence markers revealed that most of the E. coli O26 and O111 isolates were positive for ehxA, eaeA and stx1 and/or stx2. These results suggest that the majority of Korean E. coli O26 and O111 isolates from cattle can cause serious diseases in humans.
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