1. Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
2. Oregon Health Authority, Portland, Oregon, USA.
3. Georgia Emerging Infections Program, Atlanta, Georgia, USA.
4. New York Emerging Infections Program at the University of Rochester Medical Center, Rochester, New York, USA.
5. Minnesota Department of Health, St. Paul, Minnesota, USA.
6. Emory University School of Medicine, Atlanta, Georgia, USA.
7. Colorado Department of Public Health and Environment, Denver, Colorado, USA.
8. Tennessee Department of Public Health, Nashville, Tennessee, USA.
9. New Mexico Emerging Infections Program, Santa Fe, New Mexico, USA.
10. Maryland Department of Health, Baltimore, Maryland, USA.