Long-term antibody persistence after childhood vaccines
Part of Brain & nervous system, Digestive system, Infections, Mouth & dental clinical trials.
This study checks if antibodies from earlier childhood vaccines (IPV, MMR, and hepatitis A) remain in the body five years later. It aims to understand how long protection may last.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You took part in the earlier vaccine studies (NCT04638985 or NCT04636827) and completed the shots for the specific vaccine batches.
- It has been 60 to 66 months (about 5 to 5.5 years) since your last vaccine dose in those studies.
- You or your legal guardian sign the consent form to participate.
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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