This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enterobecteriaceae, Subject name: Microbiology
[{'content': "Traveller's diarrhea is caused by: \nSelect and explain. \nA. EIEC, B. EPEC, C. ETEC, D. EHEC", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) ETECRef: Microbiology by Atianthanarayan and Paniker 8th Ed. / 276 & 277* Hemoltic uremic syndrome (HUS) is a type 3 hypersensitivity reaction associated with small vessel vasculitis.* Organisms causing HUS is E.Coli (particularly EHEC) and shigella dysentriae.', 'role': 'assistant'}]