一起伴诺如病毒感染的金黄色葡萄球菌食物中毒事件调查

Investigation on a food poisoning infected with Staphylococcus aureus and Norovirus

【目的】分析温州市某学校一起伴诺如病毒感染的金黄色葡萄球菌食物中毒发生的原因,为预防类似事件的发生提供科学依据。【方法】开展流行病学和现场卫生学调查,对食品样本及患者生物标本进行细菌学和病毒学检测。【结果】共报告病例96例,发病前用餐的土豆烧鸡与本次事件存在较强的流行病学关联,实验室检测结果在6份留样食品样品、食堂工作人员和患者粪便标本中检出金黄色葡萄球菌及其肠毒素,8份患者粪便样本检测显示GⅡ型诺如病毒核酸阳性。患者主要症状以呕吐、腹泻为主。【结论】学校是食源性疾病防控的重点场所,应建立长效的监督机制,加强监测,做好食品安全管理工作,控制好传染源,利用各种宣传媒体加强卫生健康教育,提高卫生知识水平。

[Objective]To analyse a case of food poisoning induced by Staphylococcus aureus with norovirus infection in a school of Wenzhou,and to provide a scientific basis for effective control of similar incidents.[Methods]Epidemiological and field hygienic investigation were carried out on the diagnostic confirmed cases in terms of descriptive analysis,collection of field samples,cases and specimens from the related parties,bacteriology and virology detection.[Results]A total of 96 cases were reported in this incident.The epidemiological links were built between the incidents and the roast chicken with potatoes which the patients had prior to the onset of illness.Staphylococcus aureus and its enterotoxin were found in six reserved food samples and stool specimens of canteen staff and patients.Eight stool samples of the patients showed Norovirus GⅡnucleic acid positive.And the main symptoms were vomiting and diarrhea.[Conclusion]As key places for foodborne diseases prevention and control,schools shall create a long-term supervisory mechanism for intensified surveillance,enhance the management of food safety in order to control infectious sources better,and promote health education via various media for health improvement.