ArticleVaccine2026
The effect of human papillomavirus vaccination during adolescence or early adulthood on incidence of spontaneous abortion in adulthood.
Article in Vaccine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
4 authors.
Funding
Abstract
While human papillomavirus (HPV) infection has been associated with spontaneous abortion (SAB), there are limited data on HPV vaccination and SAB risk. We analyzed data from Pregnancy Study Online (PRESTO), a North American preconception cohort study (2013-2025). We followed 11,770 females aged 21-45 years for 12 months or until pregnancy, whichever came first. On baseline questionnaires, participants reported their HPV vaccination status and age at HPV vaccination. Participants reported pregnancy outcomes on follow-up questionnaires. We used Cox regression to estimate hazard ratios (HRs) and 95 % confidence intervals (CIs) adjusted for potential confounders. The prevalence of HPV vaccination was 52.9 %, and 20.4 % of participants experienced SAB. There was no appreciable association between HPV vaccination and SAB overall (HR = 0.95, 95 % CI: 0.87-1.04) or by age at vaccination (<18 years: HR = 1.03, 95 % CI: 0.92-1.16; ≥18 years: HR = 0.90, 95 % CI: 0.81-1.00). Results did not vary appreciably by timing of SAB (<6 vs. ≥6 weeks).
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