Abstract
An ongoing outbreak of salmonellosis due to Salmonella Thompson is affecting the Netherlands. Between 2 August and 19 October 2012, 866 cases were confirmed. Their median age was 44 years (range: 0-95 years), 63% were female and 36% were hospitalised. A matched case-control study suggested smoked salmon as the vehicle. Salmonella Thompson was confirmed in four of nine batches of smoked salmon from one producer. A recall of all concerned smoked salmon products was executed starting end of September.
Highlights
On 15 August 2012, the National Institute for Public Health and the Environment (RIVM) noticed an increase in the number of Salmonella Thompson cases
Thompson cultured from any sample type, confirmed by the RIVM, since August 2012
A matched case–control study was conducted by sending a similar version of the questionnaire to four controls per case, matched on year of birth, sex and municipality
Summary
Citation style for this article: Friesema IH, de Jong AE, Fitz James IA, Heck ME, van den Kerkhof JH, Notermans DW, van Pelt W, Hofhuis A. Outbreak of Salmonella Thompson in the Netherlands since July 2012. An ongoing outbreak of salmonellosis due to Salmonella Thompson is affecting the Netherlands. Between 2 August and 19 October 2012, 866 cases were confirmed. Their median age was 44 years (range: 0–95 years), 63% were female and 36% were hospitalised. Salmonella Thompson was confirmed in four of nine batches of smoked salmon from one producer. A recall of all concerned smoked salmon products was executed starting end of September. On 15 August 2012 (week 33), the National Institute for Public Health and the Environment (RIVM) noticed an increase in the number of Salmonella Thompson cases. Thompson are seen in the Netherlands per year, an outbreak investigation was started
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