1. 1National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
2. 2National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
3. 3National Microbiology Laboratory, Public Health Agency of Canada, Lethbridge, AB, Canada
4. 4National Microbiology Laboratory, Public Health Agency of Canada, Toronto, ON, Canada