1. 1Centers for Disease Control and Prevention, Atlanta, Georgia 30333
2. 2Atlanta Research and Education Foundation, Atlanta, Georgia 30033
3. 3New York State Department of Health, Albany, New York 12237
4. 4California Emerging Infections Program, Oakland, California 94612
5. 5Connecticut Emerging Infections Program, New Haven, Connecticut 06510
6. 6Georgia Division of Public Health, Atlanta, Georgia 30303
7. 7Colorado Department of Public Health and Environment, Denver, Colorado 80246
8. 8Oregon Department of Human Services, Portland, Oregon 97243
9. 9Tennessee Department of Health, Nashville, Tennessee 37243
10. 10University of New Mexico, Albuquerque, New Mexico 87131
11. 11University of Maryland, Baltimore, Maryland 21201, USA