Aislinn DeSieghardt,Lili Ding,Aaron Ermel,Eduardo L Franco,Casey Dagnall,Darron R Brown,Sem Yao,Jessica A Kahn
{"title":"Population-Level Effectiveness and Herd Protection 17 Years After HPV Vaccine Introduction.","authors":"Aislinn DeSieghardt,Lili Ding,Aaron Ermel,Eduardo L Franco,Casey Dagnall,Darron R Brown,Sem Yao,Jessica A Kahn","doi":"10.1001/jamapediatrics.2025.3568","DOIUrl":null,"url":null,"abstract":"Importance\r\nHuman papillomavirus (HPV) vaccine clinical trials demonstrate high vaccine efficacy, but postlicensure population-level effectiveness data are needed to inform vaccination and cancer-prevention recommendations and policies. Little is known about effectiveness in adolescent girls and young adult women at high risk for HPV-related cancers or after 9-valent HPV vaccine (9vHPV) introduction.\r\n\r\nObjective\r\nTo examine effectiveness and herd protection over the first 17 years after HPV vaccine introduction in adolescent girls and young women at increased risk for HPV infection and related cancers.\r\n\r\nDesign, Setting, and Participants\r\nThis cross-sectional study analyzed data from 6 surveillance studies from 2006 to 2023. A consecutive sample of sexually experienced adolescent girls and young women aged 13 to 26 years was recruited from clinical settings.\r\n\r\nExposure\r\nParticipants were stratified by HPV vaccination status; those who received at least 1 vaccine dose were defined as vaccinated.\r\n\r\nMain Outcomes and Measures\r\nEffectiveness and herd protection were assessed by comparing proportions of vaccinated and unvaccinated participants positive for at least 1 type in the 2-valent vaccine (2vHPV), 4-valent vaccine (4vHPV), and 9vHPV in each of 6 studies. The prevalence of vaccine-type HPV was compared in vaccinated participants from surveillance studies 2 through 6 vs participants recruited in surveillance study 1, all of whom were unvaccinated. Inverse probability of treatment weighting with propensity score was used to balance between-wave differences in participant characteristics.\r\n\r\nResults\r\nOf 2335 participants (mean [SD] age, 18.9 [2.7] years; 1526 African American [65.4%], 13 Asian [0.6%], 6 Native American [0.3%], 582 White [24.9%], and 151 multiracial [6.5%]; 173 Hispanic [7.4%]), 1195 participants (51.2%) reported a sexually transmitted infection history and 1843 participants (78.9%) reported 2 or more male sex partners. Vaccination rates increased from 0 of 371 participants to 330 of 402 participants (82.1%) from 2006 to 2023. Among vaccinated participants, positivity decreased from 93 of 371 participants (27.7%) to 1 of 330 participants (0.4%) for 2vHPV (relative difference, 98.4%), 118 participants (35.4%) to 3 participants (2.1%) for 4vHPV (relative difference, 94.2%), and 163 participants (48.6%) to 21 participants (11.8%) for 9vHPV (relative difference, 75.7%). Among unvaccinated participants, positivity decreased from 93 of 371 participants (25.8%) to 3 of 72 participants (7.3%) for 2vHPV (relative difference, 71.6%), 118 participants (25.3%) to 4 participants (6.1%) for 4vHPV (relative difference, 75.8%), and 163 participants (42.7%) to 13 participants (31.1%) for 9vHPV (relative difference, 27.2%). For positivity rates, counts are raw numbers and percentages are propensity score adjusted. Adjusted logistic regression demonstrated significant reductions in the odds of at least 1 HPV type in the 2vHPV and 4vHPV among all (adjusted odds ratio [aOR], 0.03; 95% CI, 0.01 to 0.07 and aOR, 0.06; 95% CI, 0.03 to 0.10, respectively), vaccinated (aOR, 0.01; 95% CI, <0.01 to 0.05 and aOR, 0.04; 95% CI, 0.02 to 0.08, respectively), and unvaccinated (aOR, 0.23; 95% CI, 0.08 to 0.63 and aOR, 0.19; 95% CI, 0.07 to 0.52, respectively) participants and in the 9vHPV among all (aOR, 0.22; 95% CI 0.16 to 0.31) and vaccinated (aOR, 0.14; 95% CI 0.09 to 0.21) participants.\r\n\r\nConclusions and Relevance\r\nIn this study, population-level effectiveness and herd protection were robust 17 years after HPV vaccine introduction, even in sexually experienced adolescent girls and young women at relatively high risk for HPV who may not have received the full vaccination series.","PeriodicalId":14683,"journal":{"name":"JAMA Pediatrics","volume":"42 1","pages":""},"PeriodicalIF":18.0000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"JAMA Pediatrics","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1001/jamapediatrics.2025.3568","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PEDIATRICS","Score":null,"Total":0}
引用次数: 0
Abstract
Importance
Human papillomavirus (HPV) vaccine clinical trials demonstrate high vaccine efficacy, but postlicensure population-level effectiveness data are needed to inform vaccination and cancer-prevention recommendations and policies. Little is known about effectiveness in adolescent girls and young adult women at high risk for HPV-related cancers or after 9-valent HPV vaccine (9vHPV) introduction.
Objective
To examine effectiveness and herd protection over the first 17 years after HPV vaccine introduction in adolescent girls and young women at increased risk for HPV infection and related cancers.
Design, Setting, and Participants
This cross-sectional study analyzed data from 6 surveillance studies from 2006 to 2023. A consecutive sample of sexually experienced adolescent girls and young women aged 13 to 26 years was recruited from clinical settings.
Exposure
Participants were stratified by HPV vaccination status; those who received at least 1 vaccine dose were defined as vaccinated.
Main Outcomes and Measures
Effectiveness and herd protection were assessed by comparing proportions of vaccinated and unvaccinated participants positive for at least 1 type in the 2-valent vaccine (2vHPV), 4-valent vaccine (4vHPV), and 9vHPV in each of 6 studies. The prevalence of vaccine-type HPV was compared in vaccinated participants from surveillance studies 2 through 6 vs participants recruited in surveillance study 1, all of whom were unvaccinated. Inverse probability of treatment weighting with propensity score was used to balance between-wave differences in participant characteristics.
Results
Of 2335 participants (mean [SD] age, 18.9 [2.7] years; 1526 African American [65.4%], 13 Asian [0.6%], 6 Native American [0.3%], 582 White [24.9%], and 151 multiracial [6.5%]; 173 Hispanic [7.4%]), 1195 participants (51.2%) reported a sexually transmitted infection history and 1843 participants (78.9%) reported 2 or more male sex partners. Vaccination rates increased from 0 of 371 participants to 330 of 402 participants (82.1%) from 2006 to 2023. Among vaccinated participants, positivity decreased from 93 of 371 participants (27.7%) to 1 of 330 participants (0.4%) for 2vHPV (relative difference, 98.4%), 118 participants (35.4%) to 3 participants (2.1%) for 4vHPV (relative difference, 94.2%), and 163 participants (48.6%) to 21 participants (11.8%) for 9vHPV (relative difference, 75.7%). Among unvaccinated participants, positivity decreased from 93 of 371 participants (25.8%) to 3 of 72 participants (7.3%) for 2vHPV (relative difference, 71.6%), 118 participants (25.3%) to 4 participants (6.1%) for 4vHPV (relative difference, 75.8%), and 163 participants (42.7%) to 13 participants (31.1%) for 9vHPV (relative difference, 27.2%). For positivity rates, counts are raw numbers and percentages are propensity score adjusted. Adjusted logistic regression demonstrated significant reductions in the odds of at least 1 HPV type in the 2vHPV and 4vHPV among all (adjusted odds ratio [aOR], 0.03; 95% CI, 0.01 to 0.07 and aOR, 0.06; 95% CI, 0.03 to 0.10, respectively), vaccinated (aOR, 0.01; 95% CI, <0.01 to 0.05 and aOR, 0.04; 95% CI, 0.02 to 0.08, respectively), and unvaccinated (aOR, 0.23; 95% CI, 0.08 to 0.63 and aOR, 0.19; 95% CI, 0.07 to 0.52, respectively) participants and in the 9vHPV among all (aOR, 0.22; 95% CI 0.16 to 0.31) and vaccinated (aOR, 0.14; 95% CI 0.09 to 0.21) participants.
Conclusions and Relevance
In this study, population-level effectiveness and herd protection were robust 17 years after HPV vaccine introduction, even in sexually experienced adolescent girls and young women at relatively high risk for HPV who may not have received the full vaccination series.
期刊介绍:
JAMA Pediatrics, the oldest continuously published pediatric journal in the US since 1911, is an international peer-reviewed publication and a part of the JAMA Network. Published weekly online and in 12 issues annually, it garners over 8.4 million article views and downloads yearly. All research articles become freely accessible online after 12 months without any author fees, and through the WHO's HINARI program, the online version is accessible to institutions in developing countries.
With a focus on advancing the health of infants, children, and adolescents, JAMA Pediatrics serves as a platform for discussing crucial issues and policies in child and adolescent health care. Leveraging the latest technology, it ensures timely access to information for its readers worldwide.