OBJECTIVES: An Austrian boarding school reported a cluster of @entity1902 on January 10, 2014. Environmental swabs from the school cafeteria and a nearby kebab restaurant tested positive for norovirus. The outbreak was investigated to identify its source(s). METHODS: An outbreak case was defined as a student or staff member with @entity294 or @entity391 that developed between January 7 and 13. Details on food exposure were collected via a self-administered questionnaire; risk ratios (RR) and 95% confidence intervals (CI) were calculated. Norovirus from the stool specimens of cases and asymptomatic kebab restaurant workers were genotyped. RESULTS: Twenty-eight cases were identified among 144 @entity1 (attack rate 19%). The outbreak emerged and peaked on January 9, and ended on January 12. Compared to those who did not eat kebab, those who ate kebab on 7, 8, and 9 January were respectively 11 (95% CI 4.2-28), 6.7 (95% CI 3.4-13), and 9.3 (95% CI 4.0-22) times more likely to develop disease within the following 2 days. Stool specimens from three cases and three restaurant workers were positive for norovirus GII. @entity3544 . CONCLUSIONS: The kebab prepared by norovirus-positive restaurant workers was the most likely source of the outbreak. It is recommended that food handlers comply strictly with hand hygiene and avoid bare-handed contact with ready-to-eat food to minimize the risk of @entity281 .

A norovirus GII. XXXX outbreak in a boarding school, Austria 2014.

@entity1 :: ('9606', 'Species') :: ['persons'] @entity294 :: ('MESH:D003967', 'Disease') :: ['diarrhoea'] @entity3544 :: ('644914', 'Gene') :: ['P21'] @entity391 :: ('MESH:D014839', 'Disease') :: ['vomiting'] @entity1902 :: ('MESH:D005759', 'Disease') :: ['gastroenteritis'] @entity281 :: ('MESH:D007239', 'Disease') :: ['food-borne infection']
@entity3544 :: (644914,Gene) :: ['P21']
