Antibody levels 5 years after childhood vaccines
Part of Brain & nervous system, Digestive system, Infections, Mouth & dental clinical trials.
This study checks how long antibodies from certain vaccines (polio, measles-mumps-rubella, and hepatitis A) last in the body, 5 years after they were given. It helps researchers understand if booster shots might be needed later.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You already took part in one of two earlier studies (NCT04638985 or NCT04636827)
- You received the full series of the study vaccines (polio, MMR, and/or hepatitis A)
- It has been about 5 years since you got your last dose of these vaccines
- You or your legal guardian can sign a consent form agreeing to this follow-up
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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