摘要
目的调查分析一起由同一餐次但不同批次菜品导致的食源性胃肠道疾病暴发,查明暴发原因。方法应用流行病学描述性分析和罹患率统计学分析,并结合相关人员的个人访谈、自填式问卷和电话传真回访、现场卫生学调查取证以及实验室检测对暴发原因进行综合分析判断,对食物中毒的致病因素进行探讨。结果在相关人群中共搜索到46例确诊病例,主要表现为急性胃肠炎症状,发病时间分布于2009年7月22日晚至23日早,流行病学曲线提示为一起点源性暴发。经综合分析,2009年7月22日午餐与本次暴发在流行病学上具有相关性。结论某旅行社游客发生了一起食物中毒暴发,主要原因是就餐人数众多,短时间内食品加工量大,造成制作过程中微生物交叉污染及大量繁殖的危险性增加,可疑致病菌为副溶血性弧菌。
Objective To investigate and analyze an outbreak of foodborne gastrointestinal disease induced by different batches from the same food supplier, and to identify the cause of outbreak. Methods The cause of outbreak was analyzed and determined by descriptive epidemiology analysis and statistical analysis of attack rate, along with individual interview for the related hotel workers, self-filling questionnaire, telecommunication and fax interview, evidence collection and hygienic investigation on the site and laboratory tests. The pathogenic factors of the incident were also discussed. Results 46 confirmed cases with the main symptoms of acute gastroenteritis were screened out from related population. The distribution of the onset time was from the evening on July 22 to the next morning and the incidence curve suggested a point source outbreak. Considering all the evidence, an epidemiological correlation was found between the lunch on July 22 and the outbreak. Conclusion A gastrointestinal disease outbreak of food poisoning was occurred among the tourists. The reason of outbreak was that a large batches of food were served for a large number of people and the risk of cross- contamination and proliferation of microorganisms increased during food processing. The suspicious pathogen was vibrio parahaemolyticus.
出处
《中国食品卫生杂志》
北大核心
2012年第6期574-577,共4页
Chinese Journal of Food Hygiene
关键词
暴发
流行病学分析
罹患率
副溶血性弧菌
食物中毒
餐馆
Outbreak
epidemiological analysis
attack rate
vibrio parahaemolyticus
food poisoning
restaurant
