1998年8月16日,某初中学校发生一起感染性腹泻,262人就餐,81人发病无死亡病例。经流行病学调查和实验室诊断,签定为感染性腹泻。1.流行病学调查 8月10日,该校学生中开始有人腹痛,腹泻,之后病人逐日增加,至18日已达81人,住院治疗16人,发病率为:31.2％。 对病人进食情况和食品从业人员调查发现,大部分病人为学生,其中在大食堂就餐者,小灶就餐者,校 On August 16, 1998, an infectious diarrhea occurred in a junior high school, with 262 people dying and 81 without any death. Epidemiological investigation and laboratory diagnosis, signed for infectious diarrhea. 1. Epidemiological survey On August 10, some of the students started to have abdominal pain and diarrhea. After that, the number of patients increased day by day. By the 18th, 81 people had been hospitalized and 16 were hospitalized, the incidence rate was 31.2%. A survey of patients’ diet and food practitioners found that most of the patients were students, including diners in the grand canteen, diners, schools