1. Coronavirus and Other Respiratory Viruses Division, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
2. Influenza Division, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
3. Vanderbilt University Medical Center , Nashville, Tennessee , USA
4. Westat , Rockville, Maryland , USA
5. Division of Child and Adolescent Health, Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons , New York, New York , USA
6. Department of Population and Family Health, Columbia University Mailman School of Public Health, New York, New York, USA
7. New York-Presbyterian Hospital , New York, New York , USA
8. Stanford University School of Medicine , Stanford, California , USA
9. Marshfield Clinic Research Institute , Marshfield, Wisconsin , USA
10. University of Arizona College of Medicine , Tucson, Arizona , USA
11. University of North Carolina , Chapel Hill, North Carolina , USA
12. Children's Hospital Colorado , Aurora, Colorado , USA
13. Department of Emergency Medicine, Columbia University Vagelos College of Physicians and Surgeons , New York, New York, USA
14. Division of Child and Adolescent Health, Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA