1. COVID-NET Team, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. US Public Health Service, Rockville, Maryland, USA
3. Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. California Emerging Infections Program, Oakland, California, USA
5. Colorado Department of Public Health and Environment, Denver, Colorado, USA
6. Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut, USA
7. Department of Medicine and Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
8. Emerging Infections Program, Georgia Department of Health, Atlanta, Georgia, USA
9. Veterans Affairs Medical Center, Atlanta, Georgia, USA
10. Maryland Department of Health, Baltimore, Maryland, USA
11. Michigan Department of Health and Human Services, Lansing, Michigan, USA
12. Minnesota Department of Health, St Paul, Minnesota, USA
13. New Mexico Department of Health, Santa Fe, New Mexico, USA
14. New York State Department of Health, Albany, New York, USA
15. University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
16. Oregon Health Authority, Portland, Oregon, USA
17. Vanderbilt University School of Medicine, Nashville, Tennessee, USA
18. Salt Lake County Health Department, Salt Lake City, Utah, USA