A Study to Learn About The COVID-19 (Study) Vaccine (Called COMIRNATY) in People That Are Less Than 21 Years Old. — StellaPhase 4 — Post-approval study. The treatment has been approved, but researchers continue monitoring it in a large population over time.
Trial locations(34 sites)
United States
Children's of Alabama, Birmingham, Alabama Phoenix Children's Hospital, Phoenix, Arizona Childrens Hospital Los Angeles, Los Angeles, California Valley Children's Hospital, Madera, California Lucile Packard Children's Hospital Stanford, Palo Alto, California Childrens Hospital of Colorado, Aurora, Colorado Connecticut Children's Medical Center, Hartford, Connecticut Nemours Children's Hospital, Delaware, Wilmington, Delaware Childrens National Hospital, Washington D.C., District of Columbia Memorial Healthcare System, Hollywood, Florida Children's Healthcare of Atlanta - Arthur M. Blank Hospital, Atlanta, Georgia Lurie Children's Hospital, Chicago, Illinois Indiana University School of Medicine, Indianapolis, Indiana Riley Hospital for Children at IU Health, Indianapolis, Indiana Children's Hospital, New Orleans, Louisiana Boston Children's Hospital, Boston, Massachusetts University of Michigan Health Center, Ann Arbor, Michigan Children's Hospital of Michigan, Detroit, Michigan Children'S Hospitals & Clinics of Minn, Minneapolis, Minnesota Childrens Mercy Kansas City, Kansas City, Missouri Washington University School of Medicine, St Louis, Missouri Northwell Health-Cohen Children's Medical Center, New Hyde Park, New York Columbia University Medical Center, New York, New York Duke University Hospital, Durham, North Carolina Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio Oregon Health and Science University, Portland, Oregon The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania Medical University of South Carolina: Shawn Jenkins Women's and Children's Hospital, Charleston, South Carolina MUSC Summey Medical Pavilion, North Charleston, South Carolina Texas Children's Hospital, Houston, Texas Primary Children's Hospital, Salt Lake City, Utah Seattle Children's Hospital, Seattle, Washington Canada
The Hospital for Sick Children, Toronto, Ontario Age range
0 Years – 20 Years
Last updated October 2025