1 Food-Borne Disease and Antimicrobial Resistance Surveillance Division, Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Canada.
2 Outbreak Management Division, Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Canada.
3 National Microbiology Laboratory, Division of Enteric Diseases, Public Health Agency of Canada, Winnipeg, Canada.