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Cross-border outbreak of Salmonella enterica ssp. enterica serovar Bovismorbificans : multiple approaches for an outbreak investigation in Germany and Switzerland

Knoblauch, Astrid M. and Bratschi, Martin W. and Zuske, Meike K. and Althaus, Denise and Stephan, Roger and Hächler, Herbert and Baumgartner, Andreas and Prager, Rita and Rabsch, Wolfgang and Altpeter, Ekkehardt and Jost, Marianne and Mäusezahl, Mirjam and Hatz, Christoph and Kiefer, Sabine. (2015) Cross-border outbreak of Salmonella enterica ssp. enterica serovar Bovismorbificans : multiple approaches for an outbreak investigation in Germany and Switzerland. Swiss medical weekly, 145 , w14182.

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Official URL: http://edoc.unibas.ch/dok/A6438855

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Abstract

In July 2014, an outbreak of Salmonella enterica ssp. enterica serovar Bovismorbificans was detected in Switzerland. The goal of the outbreak investigation was to rapidly identify and eliminate the contamination source in order to prevent new cases.; A case-case study design was applied comprising reported cases of S. Bovismorbificans and cases of other serovars. A trawling questionnaire was administered by telephone interview. Data were collected for 34 cases (20 S. Bovismorbificans and 14 Salmonella spp.) pertaining to food consumption during the 72 hours prior to symptom onset.; A statistically significant association between an S. Bovismorbificans infection and the consumption of 'salads' (odds ratio [OR] 14.3, 95% confidence interval [CI] 1.47-138.27) as well as the consumption of 'sprouts' (OR 10.6, 95% CI 1.16-97.59) was found. Principal places of consumption of 'salads' and 'sprouts' in outbreak cases were restaurants in southern Germany (80.0%, 95% CI 56.3%-94.3%). Microbiological analysis in Germany identified S. Bovismorbificans on sprouts, and genotype analysis confirmed that Swiss and German cases shared the same outbreak strain. The contaminated products were removed from the market in Germany, preventing an on-going outbreak.; The combination of the applied methods and the collaboration between the two countries proved to be crucial elements of this investigation. A series of sprouts-associated salmonellosis outbreaks underpin the importance of this vegetable as a potential food-borne pathogen carrier.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Former Units within Swiss TPH > Health Impact Assessment (Utzinger)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Swiss Centre for International Health (SCIH) > Health Systems Support (Prytherch)
UniBasel Contributors:Bratschi, Martin and Bratschi, Martin and Hatz, Christoph and Kiefer, Sabine
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:EMH
ISSN:1424-7860
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:13 Oct 2017 10:50
Deposited On:06 Nov 2015 10:21

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