Isolation and characterization of Shiga toxin-producing Escherichia coli O157:H7 from beef,pork and cattle fecal samples in Changchun,China |
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Authors: | Zhou Zhijiang Nishikawa Yoshikazu Zhu Ping Hong Shangyuan Hase Atsushi Cheasty Tom Smith Henry R Zheng Minggong Haruki Kosuke |
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Institution: | Faculty of Animal Medicine, Changchun University of Agriculture and Animal Sciences, Changchun, China. |
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Abstract: | Meat samples and fecal specimens from adult cattle were collected in Changchun, China and were examined for presence of Shiga toxin-producing Escherichia coli (STEC) serogroup O157. STEC O157 strains were isolated from 2 (5%) of 40 beef, 1 (3.3%) of 30 pork, and 3 (1.7%) of 176 adult cattle fecal samples. The strains belonged to phage types (PT) 4, 8, or 47. Two beef strains and a strain previously isolated from a patient in Shandong, China, were PT-4 and showed a similar PFGE pattern, suggesting the possibility of food-borne transmission. It is suggested that cattle are a reservoir of STEC O157:H7 and meat products are contaminated by this pathogen in Changchun, China as well as in other countries. |
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