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业已证明，寄居人和动物肠道的多种大肠杆菌可引起腹泻．统称为肠致泻性大肠杆菌。根据它们的毒力因子、致病机理、流行病学及临床特征可分为产毒性大肠杆菌（ETEC）、致病性大肠杆菌（EPEC）、侵袭性大肠杆菌（EIEC）、出血性大肠杆菌（EHEC）和集聚性粘附大肠杆菌（EAGGEC）
It has been shown that various Escherichia coli in the gut and animal gut can cause diarrhea. Collectively referred to as intestinal diarrhea Escherichia coli. According to their virulence factors, pathogenesis, epidemiology and clinical features, they can be divided into ETEC, EPEC, EIEC, EHEC) and Agglutination-Adhesive Escherichia coli (EAGGEC)