某福利院一起肠炎沙门菌食源性疾病的调查分析

Analysis of foodborne disease caused by Salmonella enteritidis in a welfare home

目的对某福利院一起肠炎沙门菌食源性疾病进行调查和溯源,为研究相关食源性疾病提供参考。方法采用流行病学、食品卫生学和脉冲场凝胶电泳(PFGE)同源性分析等方法,分析本次食源性疾病事件。结果确认本次事件中病例23名,患病率5.65%(23/407);现场采集病例肛拭子15份和厨房工作人员肛拭子3份、留样菜品3份、水果2份以及冰棒1份,其中从11份病例肛拭子中检出肠炎沙门菌,PFGE结果显示11株肠炎沙门菌的DNA条带图谱相似性为96.4%,聚类分析为同一型,结合流行病学调查,初步判断菌株来自同一克隆系。结论综合流行病学、食品卫生学和实验室检测结果,确定为一起肠炎沙门菌引起的食源性疾病,福利院应加强对特殊人群的饮食安全管理,制定相应的食源性疾病突发事件应急处理预案,防止此类事故再发生。

Objective To investigate and trace the source of Salmonella enteritidis food poisoning in a welfare institution,so as to provide reference for the study of similar foodborne disease.Methods Epidemiology,food hygiene and pulsed field gel electrophoresis(PFGE)technology were used to investigate and analyze the incident.Results There were 23 confirmed cases of foodborne disease,and the incidence rate was 5.65%(23/407);15 anal swabs were collected from patients,as well as 3 anal swabs from kitchen staff,3 preserved dishes,2 fruits and 1 cold drink.Salmonella enteritidis was detected from 11 anal swabs.PFGE typing result showed that the similarity of 11 strains of Salmonella enteritidis was 96.4%,and cluster analysis showed that they were the same type.It was preliminarily determined that the strain was from the same clone line.Conclusion Based on the analysis of epidemiology,food hygiene and laboratory test result,it was confirmed that the foodborne disease was caused by Salmonella enteritidis.Welfare institutions should strengthen the management of food safety for special groups,and formulate corresponding emergency response plans for food poisoning emergencies to prevent the recurrence of such accidents.