1. Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging Zoonotic and Infectious Diseases
2. Epidemic Intelligence Service Program Office for Scientific Education and Professional Development, Division of Applied Sciences, Centers for Disease Control and Prevention
3. Tennessee Department of Health, Nashville
4. California Department of Public Health Infectious Diseases Branch, Richmond
5. Connecticut Emerging Infections Program, New Haven and Hartford
6. Minnesota Department of Health, Minneapolis
7. Georgia Emerging Infections Program, Division of Public Health, Atlanta
8. New York Emerging Infections Program, New York State Department of Health, Albany