Sean T. O’Leary, MD, MPH

University of Colorado School of Medicine
Children’s Hospital Colorado

Dr. Sean O'Leary is an associate professor of pediatrics at the University of Colorado School of Medicine and Children's Hospital Colorado, a pediatric infectious diseases specialist, and an investigator at the Adult and Child Consortium for Health Outcomes Research and Delivery Science (ACCORDS). He received his bachelor’s degree in environmental studies from Brown University, and then went on to medical school at the University of Texas at Houston. He completed his residency in pediatrics at Children's Hospital Colorado in 1999, followed by eight years in private pediatric practice.

Dr. O'Leary's research focuses on identifying barriers to vaccination and developing and testing interventions to address those barriers, with numerous publications in the areas of vaccine safety, vaccine hesitancy and refusal, immunization policy, vaccination in OB/GYN settings, and influenza vaccine. He is also the director of Colorado's pediatric practice-based research network, the Colorado Children's Outcomes Network.

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