1. Department of Food Science, The Pennsylvania State University, University Park, Pennsylvania, USA
2. Pennsylvania Department of Health, Harrisburg, Pennsylvania, USA
3. U.S. Geological Survey, National Wildlife Health Center, Madison, Wisconsin, USA
4. Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, Maryland, USA
5. Center for Food Safety, Department of Food Science and Technology, University of Georgia, Griffin, Georgia, USA
6. Department of Population Health, Poultry Diagnostic and Research Center, University of Georgia, Athens, Georgia, USA
7. E. coli Reference Center, The Pennsylvania State University, University Park, Pennsylvania, USA