1. National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
2. Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada
3. Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Ontario, Canada
4. Department of Population Medicine, Faculty of Health Sciences, University of Guelph, Guelph, Ontario, Canada
5. National Microbiology Laboratory, Public Health Agency of Canada, St. Hyacinthe, Quebec, Canada