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stx2vha is the dominant genotype of Shiga toxin-producing Escherichia coli O157:H7 isolated from patients and domestic animals in three regions of China
Authors:Zheng Han  Jing Huaiqi  Wang Hua  Xia Shengli  Hu Wangfu  Cui Shuyu  Bi Zhenqiang  Yang Jinchuan  Pang Bo  Zhao Guangfa  Zhang Jin  Li Hongwei  Xu Jianguo
Affiliation:Department of Diarrhea Diseases, National Institute for Communicable Diseases Prevention and Control, China Center for Disease Prevention and Control.
Abstract:Shiga toxin-producing Escherichia coli(STEC) O157: H7 strains were isolated from domestic animals and patients from Xuzhou City, Jiangsu Province, China and the bordering Anhui and Henan Provinces and were examined for the stx genotype. Of 390 strains, 277 were identified as genotype stx2vha ; 41, stx2 ; 51, stx2-stx1 ; 1, stx2-stx2vha-stx1 ; 5, stx2-stx2vha ; and 15 were un-typeable. Of the 277 stx2vha-bearing isolates, 116 were isolated from goats; 42, cattle; 38, hens, and 35 from pigs. The study shows stx2vha is the dominant genotype and goats are an important reservoir.
Keywords:shiga toxin‐producing Escherichia coli (STEC) O157:H7  genotypes  un‐typeable  goats  cattle
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