COVID-19 vaccine study for children 6 months to 12 years
Part of Infections, Lungs & breathing clinical trials.
This study tests a new mRNA vaccine (called mRNA-1283) to protect against COVID-19 in children from 6 months to under 12 years old. It aims to see if the vaccine is safe and produces a good immune response.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Your child must be between 6 months and 12 years old (under 12).
- Your child should be in good general health. Stable conditions like asthma or reflux are okay if well-controlled.
- If your child is under 2 years old, they must have been born at full term (at least 37 weeks) with a birth weight of at least 2.5 kg.
- Your child must not have had COVID-19 within the last 3 months.
- Your child must not have received any COVID-19 vaccine within the last 6 months (or the newest 2026–2027 version ever).
- No other vaccines within 14 days before or after the study vaccine (live vaccines require 28 days).
- Your child must not have a history of heart muscle inflammation (myocarditis) or related heart conditions.
- If your child has reached puberty (menarche), they must not be pregnant, breastfeeding, and must use contraception if sexually active.
- No immunosuppressive medications (like steroids or biologics) within the last 180 days.
- No blood products or immunoglobulins (except certain RSV antibodies) within the last 90 days.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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