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