1. Department of Population MedicineUniversity of Guelph, Guelph, Ontario, Canada
2. Office of Public Health PracticePublic Health Agency of Canada, Guelph, Ontario, Canada
3. Department of GeographyMcGill University, Montreal, Quebec, Canada
4. Centre for Food-borneEnvironmental & Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Ontario, Canada
5. Nunavut Research Institute, Iqaluit, Nunavut, Canada