1. Food Safety Science Directorate, Canadian Food Inspection Agency, Ottawa, Canada.
2. Groupe de recherche en épidémiologie des zoonoses et santé publique, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Quebec, Canada.
3. Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Canada.
4. National Microbiology Laboratory at Saint-Hyacinthe, Public Health Agency of Canada, Saint-Hyacinthe, Canada.