1. From the Coronavirus and Other Respiratory Viruses Division, Centers for Disease Control and Prevention, Atlanta, Georgia;
2. Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children’s Hospital, Boston, Massachusetts;
3. Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
4. The Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta and the Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia;
5. Division of Infectious Diseases, Departments of Pediatrics and Molecular Microbiology and Immunology, University of Southern California, Children’s Hospital Los Angeles, Los Angeles, California;
6. Division of Critical Care Medicine, Department of Anesthesiology and Critical Care, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania;
7. Division of Pediatric Hospital Medicine, UC San Diego-Rady Children’s Hospital, San Diego, California;
8. Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado;
9. Division of Pediatric Infectious Diseases, Department of Pediatrics, Children’s Mercy Kansas City, Kansas City, Missouri;
10. Division of Pediatric Critical Care, Department of Pediatrics, University of Utah and Primary Children’s Hospital, Salt Lake City, Utah;
11. Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama;
12. Division of Critical Care Medicine, Department of Pediatrics, Akron Children’s Hospital, Akron, Ohio;
13. Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;
14. Department of Pediatrics, The Ryan White Center for Pediatric Infectious Disease and Global Health, Indiana University School of Medicine, Indianapolis, Indiana;
15. Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children’s Hospital, Little Rock, Arkansas;
16. Department of Pediatrics, Baylor College of Medicine, Immunization Project, Texas Children’s Hospital, Houston, Texas;
17. Division of Pediatric Critical Care, University of Minnesota Masonic Children’s Hospital, Minneapolis, Minnesota;
18. Division of Pediatric Critical Care, Department of Pediatrics, Cooperman Barnabas Medical Center, Livingston, New Jersey;
19. Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children’s Medical Center Dallas, Texas;
20. Divisions of Pediatric Infectious Diseases and Pediatric Critical Care Medicine, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota;
21. Division of Cardiology, Department of Pediatrics, Louisiana State University Health Sciences Center and Children’s Hospital of New Orleans, New Orleans, Louisiana;
22. Department of Pediatrics, University of North Carolina at Chapel Hill Children’s Hospital, Chapel Hill, North Carolina;
23. Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston, South Carolina;
24. Division of Infectious Diseases, Department of Pediatrics, Oregon Health and Science University, Portland, Oregon;
25. *Division of Infectious Diseases, Department of Pediatrics, and Department of Cell and Molecular Biology, Children’s of Mississippi, University of Mississippi Medical Center, Jackson, Mississippi;
26. †Divisions of Critical Care Medicine and Allergy, Immunology, and Bone Marrow Transplant, Department of Pediatrics, University of California San Francisco, San Francisco, California;
27. ‡Division of Critical Care Medicine, UCSF Benioff Children’s Hospital Oakland, California;
28. §Division of Pediatric Critical Care Medicine, Nationwide Children’s Hospital Columbus, Ohio;
29. ¶Division of Pediatric Infectious Diseases, Department of Pediatrics, Bernard and Millie Duker Children’s Hospital, Albany Med Health System, Albany, New York;
30. ‖Departments of Anaesthesia and Pediatrics, Harvard Medical School, Boston, Massachusetts, USA; and
31. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts.