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１５７大肠杆菌是致泻性大肠杆菌的一种主要血清型，能引起人类出血性腹泻，在儿童和老年患者中可能并发溶血性尿毒症和紫癜而受到重视。自从１９８２年首次从食用牛肉汉堡包而导致出血性腹泻患者粪便和汉堡包中分离到此菌后，相继在美国、英国、加拿大、德国和日本发生多次由
157 Escherichia coli is a major serotype of diarrheogenic E. coli that causes diarrhea in humans and is valued in children and elderly patients for possible hemolytic uremic and purpura. Since this bacterium was first isolated from feces and hamburger in patients with hemorrhagic diarrhea caused by eating beef hamburger in 1982, it has been reported many times in the United States, Britain, Canada, Germany and Japan