一起在漯河市城区发生的食物中毒的调查

Investigation of a Food Poisoning Accident in the Urban District of Luohe

目的分析食物中毒事件发生的原因,提出预防措施。方法采用病例对照研究对此次食物中毒事件展开调查,以是否食用某一食物为暴露特征对病例组对照组进行分析,并采集可疑样品进行实验室检测。结果根据流行病学调查资料、临床表现和实验室检测结果,确认为一起以急性胃肠炎症状为主要临床表现的食物中毒事件;可疑食物与发病关系的病例对照分析结果显示,凉菜口条为此次中毒事件的危险食物(χ2=28.1,P<0.01,OR=4.68)。结论在漯河市城区某酒店发生了一起食物中毒事件。在事件发生地调查发现卤制的口条在温度不符合卫生要求的操作间放置时间过久,食用前未再加热,卤制口条为高危食物,实验室检验结果表明卤制口条被肠炎沙门菌污染,致病原因有待于进一步查明。

Objective To analyze the cause of a food poisoning event and propose preventive measures. Methods The food poisoning event was investigated by means of a case-control study; the case group and the control group were analyzed with whether the same food was eaten as the exposure characteristic; suspected samples were collected and analyzed. Results Based on epidemiological investigation data, clinical manifestations and laboratory test results, the event was confirmed as a food poisoning accident with acute gastroenteritis symptoms as the main clinical manifestations. Case-control analysis results of suspected food and the occurrence indicated bittern-cooked animal tongue, a cold dish, was highly responsible （X2 = 28. 1, P 〈0. 01, OR =4.68）. Conclusion A food poisoning accident occurred in a hotel in the urban district of Luohe. In investigation of the event, it was found that bittern-cooked animal tongue had been placed for a long period in an operating room where the temperature did not satisfy sanitary requirements hut was not reheated before use. The cold dish was considered highly responsible. Laboratory test results indicated the bittern-cooked animal tongue was contaminated by Salmonella enteritidis. The cause of the accident awaits further confirmation.