Long-term immunity study of chickenpox vaccine booster
Part of Infections clinical trials.
This study follows up people who were in a previous phase 3 chickenpox vaccine trial. It checks how long protection from a booster dose lasts, by taking a blood sample.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You took part in the earlier phase 3 chickenpox vaccine study.
- You or your guardian can understand and sign a consent form.
- You have a verified legal identity (like a government ID).
- You are still within the allowed blood collection time window.
- You have not had chickenpox or shingles since the earlier study.
- You have not received any other chickenpox vaccine since the earlier study.
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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