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Integrated surveillance and potential sources of Salmonella Enteritidis in human cases in Canada from 2003 to 2009

  • A. NESBITT (a1), A. RAVEL (a2), R. MURRAY (a1), R. McCORMICK (a1), C. SAVELLI (a1), R. FINLEY (a1), J. PARMLEY (a3), A. AGUNOS (a3), S. E. MAJOWICZ (a4) and M. GILMOUR (a5)...
Abstract
SUMMARY

Salmonella Enteritidis has emerged as the most prevalent cause of human salmonellosis in Canada. Recent trends of S. Enteritidis subtypes and their potential sources were described by integrating Salmonella data from several Canadian surveillance and monitoring programmes. A threefold increase in S. Enteritidis cases from 2003 to 2009 was identified to be primarily associated with phage types 13, 8 and 13a. Other common phage types (4, 1, 6a) showed winter seasonality and were more likely to be associated with cases linked to international travel. Conversely, phage types 13, 8 and 13a had summer seasonal peaks and were associated with cases of domestically acquired infections. During agri-food surveillance, S. Enteritidis was detected in various commodities, most frequently in chicken (with PT13, PT8 and PT13a predominating). Antimicrobial resistance was low in human and non-human isolates. Continued integrated surveillance and collaborative prevention and control efforts are required to mitigate future illness.

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Copyright
The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution-NonCommercial-ShareAlike licence <http://creativecommons.org/licenses/by-nc-sa/2.5/>. The written permission of Cambridge University Press must be obtained for commercial re-use.
Corresponding author
*Author for correspondence: A. Nesbitt, Centre for Food-borne, Environmental, and Zoonotic Infectious Diseases, Public Health Agency of Canada, 120-255 Woodlawn Road, West, Guelph, Ontario, Canada, N1H 8J1. (Email: Andrea.Nesbitt@phac-aspc.gc.ca)
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Epidemiology & Infection
  • ISSN: 0950-2688
  • EISSN: 1469-4409
  • URL: /core/journals/epidemiology-and-infection
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