1. CDC COVID-19 Response Team, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
2. Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
3. Epidemic Intelligence Service, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
4. California Emerging Infections Program , Oakland, California , USA
5. Berkeley School of Public Health, University of California , Berkeley, California , USA
6. Career Epidemiology Field Officer Program, Centers for Disease Control and Prevention , Atlanta, Georgia , 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. Emory University School of Medicine , Atlanta, Georgia , USA
10. Georgia Department of Health, Georgia Emerging Infections Program , Atlanta, Georgia , USA
11. Atlanta Veterans Affairs Medical Center , Atlanta, Georgia , USA
12. Iowa Department of Health , Des Moines, Iowa , USA
13. Michigan Department of Health and Human Services , Lansing, Michigan , USA
14. Minnesota Department of Health , Saint Paul, Minnesota , USA
15. New Mexico Department of Health, New Mexico Emerging Infections Program , Santa Fe, New Mexico , USA
16. New York State Department of Health , Albany, New York , USA
17. University of Rochester School of Medicine and Dentistry , Rochester, New York , USA
18. Rochester Emerging Infections Program, University of Rochester Medical Center , Rochester, New York , USA
19. Ohio Department of Health , Columbus, Ohio , USA
20. Public Health Division, Oregon Health Authority , Salem, Oregon , USA
21. Vanderbilt University Medical Center , Nashville, Tennessee , USA
22. Salt Lake County Health Department , Salt Lake City, Utah , USA
23. Utah Department of Health , Salt Lake City, Utah , USA