Long-term protection study of a combined vaccine
Part of Infections, Lungs & breathing clinical trials.
This study checks if the protection from an earlier vaccine (against whooping cough, diphtheria, and tetanus) lasts over time. Participants from a previous study will give blood samples to measure their immune response.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You took part in the earlier safety study of the combined vaccine.
- You are willing to show an ID and sign a consent form.
- You have not had another DTP-type vaccine since that study ended.
- You have not had whooping cough, diphtheria, or tetanus since that study ended.
- You do not have a bleeding disorder (like hemophilia).
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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