一起因食用热狗沙拉面包引起的肠炎沙门氏菌食源性疾病事件调查分析

Investigation and analysis of a foodborne disease of Salmonella enteritidis caused by eating hot dog salad bread

目的对一起食源性疾病事件进行调查分析,为预防此类事件的发生提供参考。方法通过现场流行病学、食品卫生学调查、实验室检测,查找可疑食品、致病因子及污染来源。结果该事件共搜索198名病例,患病率为50.13%(198/395),主要症状以腹泻(90.40%)、发热(87.88%)、腹痛(66.16%)为主,平均潜伏期为13.8 h(4~47 h)。57名病例标本、3份食品、2份食品材料、1份物表涂抹样均培养出肠炎沙门氏菌,对3份食品、2份食品原材料、1份物表涂抹样随机抽取的病例标本进行脉冲场凝胶电泳分子溯源分析,结果显示上述样品DNA指纹图谱相似度为100%。结论此次事件为一起因食用被沙门氏菌污染的热狗沙拉面包引起的食源性疾病事件。建议食品监管部门应加强食品生产企业的监管和对食品从业人员的食品安全相关知识培训,避免类似事件的发生。

Objective An incident of foodborne diseases was investigated and analyzed to provide reference for the prevention of such incidents.Methods Suspicious food,pathogenic factors and pollution sources were found through on-site epidemiological investigation,food hygiene investigation and laboratory testing.Results A total of 198 cases were searched,and the incidence rate was 50.13%(198/395).The main symptoms were diarrhea(90.40%),fever(87.88%)and abdominal pain(66.16%),the average incubation period was 13.8 h(4-47 h).Salmonella enteritidis was detected in 57 cases,3 foods,2 raw materials and 1 object surface.Pulsed field gel electrophoresis molecular traceability analysis was carried out on 3 foods,2 food raw materials,1 object surface and 11 randomly selected case samples.The result showed that the similarity of DNA fingerprints of the above samples was 100%.Conclusion The incident was a foodborne disease caused by eating hot dog salad bread contaminated by Salmonella.It is suggested that the food regulatory authorities should strengthen the supervision of food production enterprises and the training of food safety related knowledge for food practitioners to avoid similar incidents.