Published on in Vol 15, No 7 (2013): July
1 College of Veterinary Medicine, Michigan State University, East Lansing, MI, United States
2 Department of Population Medicine, University of Guelph, Guelph, ON, Canada
3 Laboratory for Foodborne Zoonoses, Public Health Agency of Canada, Guelph, ON, Canada
4 Agriculture Department, Food and Agriculture Organisation, Rome, Italy
5 Department of Political Science, University of Wisconsin-Madison, Madison, WI, United States