Jimenez, M SoledadSoler-Crespo, PilarVenanzi, J DCante, PVarela Martinez, Maria del Carmen2020-02-072020-02-072005-04Euro Surveill. 2005 Apr;10(4):9-10.1560-7917http://hdl.handle.net/20.500.12105/9042An outbreak of gastroenteritis caused by Campylobacter infection was identified in May 2003 in a school in Madrid, Spain. Eighty one cases were identified in a total of 253 people studied. A retrospective cohort study showed that a custard made with ultra high temperature (UHT) milk was associated with illness (RR: 3.15; 95% CI: 1.25-7.93). The custard was probably contaminated with Campylobacter jejuni from a raw chicken prepared a day previously in the same kitchen. Our recommendations were to periodically remind the school's authorities how to act if an outbreak should be suspected, to include the monitoring of a food handler's working day in each environmental investigation in order to detect any risk behaviour; to implement microbiological analysis from the surfaces and utensils of the collective kitchens and improve the sanitary education of food handlers.engVoRhttp://creativecommons.org/licenses/by/4.0/CampylobacterFoodborne infectionsAtribución 4.0 Internacional291834801049-1010.2807/esm.10.04.00533-en1560-7917Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletinopen access