Comparing Immune Responses and Sickness in Children Who Did or Didn?t Get the RSV Vaccine
This study wants to compare the immune response in children who received the RSV vaccine during the 2024-2025 respiratory season to those who didn’t. It will also look at how often children in both groups get sick and how severe their sickness is during the 2025-2026 respiratory season.
Why this Research Matters
This study wants to find out whether getting the RSV vaccine (known under the names nirsevimab or Beyfortus) compared to not getting it affects the body's immune response to RSV in the next respiratory season. If your child joins this study, they will attend 1 study visit at Children's Hospital Colorado. During this visit, we will do a physical exam and take vital signs from your child. We will also use a needle to take a blood sample from your child's arm. You will not know the results of these tests. You will be paid $63.00 after the completion of the study visit.
Who can Participate
Your child can join this study if they are between 7 - 37 months of age and if they were diagnosed with RSV between October 2025-May 2026.
Study ID
Protocol Number: 24-1696
Compensation Information
Meet the Team
Principal Investigator