HPV booster shot study checks how long protection lasts

NCT ID NCT04688476

First seen Nov 01, 2025 · Last updated May 10, 2026 · Updated 27 times

Summary

This study follows about 120 children who received one booster dose of the HPV vaccine (Gardasil 9) to see how long their immune protection lasts. Researchers will measure antibody levels in blood samples taken at 4, 5, and 6 years after the first vaccine dose. The goal is to understand if a single booster provides lasting protection against HPV-related cancers.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Locations

  • University of Arizona

    Tucson, Arizona, 85724, United States

  • University of California, Los Angeles

    Los Angeles, California, 90095, United States

Conditions

Explore the condition pages connected to this study.