1. Tennessee Department of Health, Nashville, Tennessee.
2. Epidemic Intelligence Service, EPO, Centers for Disease Control and Prevention, Atlanta, Georgia.
3. Foodborne and Diarrheal Diseases Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia.
4. California Emerging Infections Program, Oakland, California.
5. Colorado Department of Public Health and Environment, Denver, Colorado.
6. Connecticut Emerging Infections Program, New Haven, Connecticut.
7. Georgia Emerging Infections Program, Atlanta, Georgia.
8. Minnesota Department of Health, Minneapolis, Minnesota.
9. New York State Department of Health, Albany, New York.
10. Oregon Department of Human Services, Portland, Oregon.