Skip to main content
×
Home
    • Aa
    • Aa

A long-lasting outbreak of Salmonella Typhimurium U323 associated with several pork products, Denmark, 2010

  • K. G. KUHN (a1), G. SØRENSEN (a2), M. TORPDAHL (a3), M. K. KJELDSEN (a3), T. JENSEN (a4), S. GUBBELS (a1) (a5), G. O. BJERAGER (a4), A. WINGSTRAND (a2), L. J. PORSBO (a2) and S. ETHELBERG (a1) (a3)...
Abstract
SUMMARY

This paper shows that control of foodborne disease outbreaks may be challenging even after establishing the source of infection. An outbreak of Salmonella Typhimurium U323 infections occurred in Denmark from March to September 2010, involving 172 cases. Before the detection of human cases, several positive isolates of the outbreak strain had been found in a particular pig slaughterhouse and thus early traceback, investigation and control measures were possible. Several batches of pork and pork products were recalled and the slaughterhouse was closed twice for disinfection. No single common food item was identified as the outbreak source, but repeated isolation of the outbreak strain from the slaughterhouse environment and in pork and products as well as patient interviews strongly suggested different pork products as the source of infection. Furthermore, a matched case-control study identified a specific ready-to-eat spreadable pork sausage (teewurst) as the source of a sub-outbreak (matched odds ratio 17, 95% confidence interval 2·1–130).

Copyright
Corresponding author
*Author for correspondence: Ms. K. G. Kuhn, Department of Epidemiology, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen, Denmark. (Email: KUH@ssi.dk)
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

3.M Torpdahl , Tandem repeat analysis for surveillance of human Salmonella Typhimurium infections. Emerging Infectious Diseases 2007; 13: 388395.

6.BA Lindstedt , Multiple-locus variable-number tandem-repeat analysis of Salmonella enterica subsp enterica serovar Typhimurium using PCR multiplexing and multicolour capillary electrophoresis. Journal of Microbiological Methods 2004; 59: 163172.

13.HC Wegener , Salmonella control programs in Denmark. Emerging Infectious Diseases 2003; 9: 774780.

16.D Werber , Shiga toxin-producing Escherichia coli infection in Germany – different risk factors for different ages. American Journal of Epidemiology 2006; 165: 425434.

17.A Ammon , LR Petersen , H Karch . A large outbreak of haemolytic uremic syndrome caused by an unusual sorbitol-fermenting strain of Escherichia coli O157:H. Journal of Infectious Diseases 1999; 179: 12741277.

18.D Dourou , Behavior of Escherichia coli 0157:H7, Listeria monocytogenes and Salmonella Typhimurium in teewurst; a raw spreadable sausage. International Journal of Food Microbiology 2009; 130: 245250.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Epidemiology & Infection
  • ISSN: 0950-2688
  • EISSN: 1469-4409
  • URL: /core/journals/epidemiology-and-infection
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Altmetric attention score