1. Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Canada.
2. Department of Pathobiology, Canadian Wildlife Health Cooperative, Ontario Veterinary College, University of Guelph, Guelph, Canada.
3. Policy Integration and Zoonoses Division, Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Saint-Hyacinthe, Canada.
4. Enteric, Zoonotic and Vector-Borne Diseases, Public Health Ontario, Toronto, Canada.
5. National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canada.