Schmid D, Gschiel E, Mann M, Huhulescu S, Ruppitsch W, Bohm G, Pichler J, Lederer I, Hoger G, Heuberger S, Allerberger F
Austrian Agency for Health and Food Safety, Vienna, Austria.
Euro Surveill. 2007 Mar 1;12(3):224.
An outbreak of acute gastroenteritis occurred in September 2006 in a boarding school in eastern Austria. Of 113 cases, 101 were hospitalised. In order to identify the outbreak source, a retrospective cohort study on the group at risk was performed, including 222 pupils and 30 staff members. Food exposure in the canteen of the school was identified as the most relevant common link among the cases in the case series investigation. Although the preliminary microbiological investigation made Norovirus infections possible, an in-depth descriptive epidemiological investigation later pointed to food intoxication rather than a viral infection as the cause of the outbreak. The analytical epidemiological investigation implicated boiled rice and chicken wings served in the canteen as the most likely source of the outbreak. Staphylococcus aureus was identified as the causative agent. Further molecular characterisation revealed that the predominant S. aureus type in this outbreak was a new spa type, t2046. The same spa type was isolated from stool specimens of the majority of the cases investigated, from samples of the incriminated boiled rice, and also from a swab of a palmar skin lesion of one of the healthy kitchen workers, who is therefore the most likely source of contamination. This outbreak underlines again the importance of compliance with the basic guidelines for kitchen hygiene.
2006年9月，奥地利东部一所寄宿学校爆发了急性肠胃炎。113例病例中，101例住院治疗。为确定疫情源头，对危险人群进行了一项回顾性队列研究，包括222名学生和30名教职员工。在病例系列调查中，学校食堂的食物暴露被确定为病例之间最相关的共同环节。尽管初步微生物学调查表明可能存在诺如病毒感染，但后来深入的描述性流行病学调查指出，食物中毒而非病毒感染是此次疫情的原因。分析性流行病学调查表明，食堂供应的米饭和鸡翅是此次疫情最可能的源头。金黄色葡萄球菌被确定为病原体。进一步的分子特征分析显示，此次疫情中占主导地位的金黄色葡萄球菌类型是一种新的spa型，即t2046。在大多数被调查病例的粪便样本、涉案米饭样本以及一名健康厨房工作人员手掌皮肤损伤的拭子样本中都分离出了相同的spa型，因此该工作人员很可能是污染源。此次疫情再次强调了遵守厨房卫生基本准则的重要性。
