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目的对某校学生出现的群体性腹泻进行调查,为查明病因提供依据。方法用回顾性流行病学方法,采用统一调查表进行面对面调查,相关资料录入电脑,用SPSS16.0进行统计分析。结果本次事件共有就诊患者87例,罹患率10.79%。经过病例对照分析,2011年9月24日晚餐在食堂就餐是本次发病的一个危险因素(OR=61.75,P=0.000);并且在病人呕吐物中和粪便中检出埃希氏大肠杆菌和副溶血性弧菌。结论本次事件是由副溶血性弧菌和和埃希氏大肠杆菌混合感染造成的食物中毒。
Objective To investigate the group diarrhea occurred in a school student to provide the basis for identifying the cause. Methods A retrospective epidemiological method was used to conduct a face-to-face survey using a unified questionnaire. The relevant data were entered into a computer and statistically analyzed with SPSS16.0. Results The total number of 87 cases of this incident, the attack rate of 10.79%. After a case-control analysis, eating dinners in the cafeteria on September 24, 2011 was a risk factor for this episode (OR = 61.75, P = 0.000). Escherichia coli and Escherichia coli were detected in the patients’ vomit and feces Vibrio parahaemolyticus. Conclusion This incident is food poisoning caused by a mixed infection of Vibrio parahaemolyticus and Escherichia coli.