1. 1Food Safety Division, Alberta Agriculture and Rural Development, O. S. Longman Building, 6909 116th Street, Edmonton, Alberta, Canada T6H 0B4
2. 2Laboratory for Foodborne Zoonoses, Public Health Agency of Canada, 60 Research Lane, Unit 103, Guelph, Ontario, Canada N1G 5B2
3. 3Department of Public Health Sciences, School of Public Health, University of Alberta, 13-106D Clinical Sciences Building, 11350 83rd Avenue, Edmonton, Alberta, Canada T6G 2G3