某海岛寺庙一起副溶血性弧菌食物中毒调查

Investigation on food poisoning caused by Vibrio parahaemolyticus in an island temple

目的对一起寺庙内发生的副溶血性弧菌食物中毒调查分析,为此类食物中毒的防制提供参考。方法对该起食物中毒进行流行病学调查、现场卫生学调查、实验室检测,通过病例对照研究和统计学处理,找出中毒原因并提出防制对策。结果本次中毒确认病例28名,其中僧人24名,从业人员和游客4名,中毒罹患率为5.6%(28/500);现场调查7月20日晚餐制作过程存在交叉污染情况,病例组与对照组就餐食物差异无统计学意义(P>0.05);患者(含食堂从业人员)肛拭子标本和工用具样品检出副溶血性弧菌,血清型均为O3∶K6型,确定该起食物中毒为一起副溶血性弧菌食物中毒,中毒可能原因为食堂从业人员带菌且操作不当,污染7月20日晚餐而引起。结论本次事件提示寺庙食堂也会发生副溶血性弧菌食物中毒,相关部门应重视寺庙食物中毒风险,改善食堂卫生条件,落实食堂从业人员健康管理制度,加强监管监测和风险预警,以保障寺庙僧人和游客的食用安全。

Objective To provide reference for the prevention and control of food poisoning caused by Vibrio parahaemolyticus by investigating a food poisoning event in a temple. Methods Food poisoning field hygienic investigation,epidemiological investigation and laboratory detection were conducted. Through case control study and statistical analysis,the causes of poisoning and prevention countermeasures were put forward. Results This poisoning confirmed 28 cases,including 24 monks,4 employees and visitors,and the attack rate of 5. 6%（ 28/500）. Field survey on July 20 th found cross contamination during dinner process,and there was no difference（ P 0. 05） between the patients and the others. Patients,including the employees in the cafeteria,anal swab samples and the cooking tools were positive for Vibrio parahaemolyticus of serotypes O3∶ K6,which was the cause of food poisoning. The possible explanation was the pathogen carried by the employees in the cafeteria and improper operation during that dinner. Conclusion This incident was a Vibrio parahaemolyticus food poisoning. Relevant departments should pay attention to the food poisoning risk in temple and strengthen the regulatory monitoring and early warning to secure monks and visitors.