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Euro Surveill. 2011 May 12;16(19). pii: 19863.

An outbreak of Salmonella Typhimurium traced back to salami, Denmark, April to June 2010.

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  • 1Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark.


Between April and June 2010, a small national outbreak of Salmonella Typhimurium with a particular multilocus variable-number tandem repeat analysis (MLVA) type was identified in Denmark through laboratory-based surveillance. The outbreak involved twenty cases, primarily living within the greater Copenhagen area. Half of the cases were children aged ten years or younger and 12 were male; three cases were hospitalised.A matched case-control study showed a strong link between illness and eating a particular salami product containing pork and venison, matched odds ratio(mOR):150, confidence interval (CI): 19–1,600. The salami had been produced in Germany. Microbiological confirmation in food samples was sought but not obtained. Danish consumers were notified that they should return or dispose of any packages from the suspected salami batch. Because the salami product had potentially been sold in other European countries, the European Centre for Disease Prevention and Control urgent enquiry and Rapid Alert System for Food and Feed systems were used to highlight the possibility of outbreaks in these countries. Case-control studies area strong tool in some outbreak investigations and evidence from such studies may give sufficient information to recall a food product.

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