1. Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 2500 University Dr., Calgary, AB, Canada T2N 4N1
2. Alberta Provincial Laboratory for Public Health, Calgary Laboratory Site, 3030 Hospital Dr. NW, Calgary, AB, Canada T2N 4W4
3. Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
4. School of Public Health, University of Alberta, 3-300 Edmonton Clinic Health Authority, 11405-87 Ave, Edmonton, AB, Canada T6G 1C9 and Alberta Provincial Laboratory for Public Health, Edmonton Laboratory Site, 8440-112 St, Edmonton, AB, Canada T6G 2J2