ArticleNPJ vaccines2022
HPV16 infection decreases vaccine-induced HPV16 antibody avidity: the CVT trial.
Article in NPJ vaccines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- Effects of human papillomavirus (HPV) vaccination programmes on community rates of HPV-related disease and harms from vaccination.The Cochrane database of systematic reviews · 2025Pooled it
- Durability of immunogenicity at 5 years after a single dose of human papillomavirus vaccine compared with two doses in Tanzanian girls aged 9-14 years: results of the long-term extension of the DoRIS randomised trial.The Lancet. Global health · 2025Trial
- Precancerous cervical lesions caused by non-vaccine-preventable HPV types after vaccination with the bivalent AS04-adjuvanted HPV vaccine: an analysis of the long-term follow-up study from the randomised Costa Rica HPV Vaccine Trial.The Lancet. Oncology · 2022Trial
- Memory Cell and Antibody Responses Following a Single Versus Two Doses of Escherichia coli-Produced Vaccine Against Human Papillomavirus Types 16 and 18: A Real-World Study in Chinese Girls.International journal of cancer · 2026Article
- Exceeding expectations: factors contributing to the potency of human papillomavirus vaccines.The Lancet. Microbe · 2026Review
- Assessing high-throughput surrogate assays for real-world HPV16- and HPV18-specific vaccine immune monitoring: a comparison of PBNA, cCLIA, and IgG.Frontiers in immunology · 2026Article
- Immune Responses to Human Papillomavirus After Infection and Vaccination.Current topics in microbiology and immunology · 2026Review
- Post-attachment neutralization of HPV16 by antibodies derived from Gardasil-vaccinated women.NPJ vaccines · 2025Article
- Scientific approaches to defining HPV vaccine-induced protective immunity.International journal of cancer · 2025Review
- Article
- Review
Corrections and comments
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Authors and funding
18 authors at 9 institutions in 4 countries.
Funding
Abstract
The HPV vaccine has shown sustained efficacy and consistent stabilization of antibody levels, even after a single dose. We defined the HPV16-VLP antibody avidity patterns over 11 years among women who received one- or three doses of the bivalent HPV vaccine in the Costa Rica HPV Vaccine Trial. Absolute HPV16 avidity was lower in women who received one compared to three doses, although the patterns were similar (increased in years 2 and 3 and remained stable over the remaining 8 years). HPV16 avidity among women who were HPV16-seropositive women at HPV vaccination, a marker of natural immune response to HPV16 infection, was significantly lower than those of HPV16-seronegative women, a difference that was more pronounced among one-dose recipients. No differences in HPV16 avidity were observed by HPV18 serostatus at vaccination, confirming the specificity of the findings. Importantly, point estimates for vaccine efficacy against incident, six-month persistent HPV16 infections was similar between women who were HPV16 seronegative and seropositive at the time of initial HPV vaccination for both one-dose and three-dose participants. It is therefore likely that this lower avidity level is still sufficient to enable antibody-mediated protection. It is encouraging for long-term HPV-vaccine protection that HPV16 antibody avidity was maintained for over a decade, even after a single dose.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.