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肠出血性大肠杆菌（EnterohemorrhagicE．Coil，EHEC）的O157：H7血清型（O157）是病原性大肠杆菌之一，通常储存于牛等家畜肠道内，污染食品可引起食物中毒和感染性腹泻等疾病的散发和暴发流行。本文仅就其几个问题分述如下。1O157，的发现及其感染性疾病的流行O157最先被确认
O157: H7 serotype (O157) of Enterohemorrhagic E. Coil (EHEC) is one of the pathogenic Escherichia coli and is usually stored in the intestine of livestock such as cattle. Contamination of food can cause diseases such as food poisoning and infectious diarrhea The outbreak and outbreaks are popular. This article is only a few of the problems described below. The discovery of 1O157, the epidemic of its infectious disease, O157 was first identified