Could one HPV shot be enough? 20-Year study seeks answers
NCT ID NCT03309033
First seen Jan 29, 2026 · Last updated Jun 09, 2026 · Updated 19 times
Summary
This study is checking how long the HPV vaccine protects women who received one, two, or three doses. Researchers are following about 946 women from an earlier trial in Costa Rica for up to 20 years after their shots. By testing blood samples, they hope to learn if one dose might be enough to prevent HPV-related cancers.
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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.
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
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Locations
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Agencia Costarricense de Investigaciones Biomédicas (ACIB)
Liberia, Guanacaste Province, 50101, Costa Rica
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.