科研之友
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摘要
On 28th November 2011, a school physician informed the Austrian Agency for Health and Food Safety (AGES) of 40 cases of gastroenteritis that occurred on 24th and 25th November in a vocational school in the city of Salzburg, Austria. Two out of five students with gastroenteritis tested positive for norovirus (NV). A probable case involved diarrhoea or vomiting in a student, which occurred between 21st November and 5th December 2011. A confirmed case was a probable case with an NV-positive stool sample. Epidemiological findings led to suspect food items prepared by the school kitchen and consumed between 21st and 25th November as outbreak sources. All students at the school were eligible to be included in a retrospective cohort study. Forty-eight cases fulfilled the outbreak case definitions including three (6%) confirmed cases among a total of 351 responding students. The outbreak started on 23th November, peaked on 24th and ended on 5th December. The cohort study indicated a sour cream sauce (food-specific relative risk (RR): 16.1; 95% CI: 3.9-67.5) and a turkey-strip salad (RR: 5.2; 95% CI: 2.3-11.8) as the most likely sources, accounting for 85% of the 39 suspected foodborne cases.
- 出版日期2012
- 单位河北医科大学
