1. New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York.
2. Connecticut Emerging Infections Program, New Haven, Connecticut.
3. Minnesota Department of Health, St. Paul, Minnesota.
4. Colorado Department of Public Health and Environment, Denver, Colorado.
5. Tennessee Department of Health, Nashville, Tennessee.
6. Oregon State Public Health Division, Portland, Oregon.
7. Georgia Division of Public Health, Atlanta, Georgia.
8. Maryland Department of Health and Mental Hygiene, Baltimore, Maryland.
9. University of New Mexico Health Sciences Center, Albuquerque, New Mexico.
10. California Emerging Infections Program, Oakland, California.
11. Division of Foodborne, Bacterial, and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia.
12. Tennessee Department of Health, Division of Laboratory Services, Knoxville, Tennessee.