1. Division of Bacterial Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention , Atlanta , Georgia , USA (now with Banner Health, Phoenix, Arizona, USA)
2. School of Public Health, University of California , Berkeley, California , USA
3. Colorado Department of Public Health and Environment , Denver, Colorado , USA
4. Connecticut Department of Public Health , Hartford, Connecticut , USA
5. Georgia Department of Public Health , Atlanta , Georgia , USA
6. Departments of Epidemiology and Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania , USA
7. Minnesota Department of Health , St. Paul, Minnesota , USA
8. University of New Mexico Emerging Infections Program , Albuquerque, New Mexico , USA
9. New York State Department of Health , Albany, New York , USA
10. Oregon Health Authority Public Health Division , Portland, Oregon , USA
11. Department of Preventive Medicine, Vanderbilt University Medical Center , Nashville, Tennessee , USA