Evidence map›Paper›PMID 39989876›Full record

ArticleThe Lancet regional health. Europe2025

Effectiveness of quadrivalent human papillomavirus vaccination against high-grade cervical lesions by age and doses: a population-based cohort study.

Shiqiang Wu, Alexander Ploner, Ana Martina Astorga Alsina, Yunyang Deng, Lina Ask Schollin, Jiayao Lei

Abstract read
In one paragraph

Article in The Lancet regional health. Europe, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. HPV vaccination associates withFrontiers in microbiology · 2026
    Article
  11. Article
  12. Article
  13. Human Papillomavirus: An Old New History.Pathogens (Basel, Switzerland) · 2025
    Review
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Shiqiang WuDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Alexander PlonerDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Ana Martina Astorga AlsinaDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Yunyang DengDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Lina Ask SchollinUnit for Vaccination Programmes, Department of Public Health Analysis and Data Management, Public Health Agency of Sweden, Solna, Sweden.
Jiayao LeiDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: One or two-dose schedule for human papillomavirus (HPV) vaccination has been recommended by the World Health Organization and used in many vaccination programs. We aimed to comprehensively evaluate the effectiveness of quadrivalent HPV vaccine against high-grade cervical lesions by age at vaccination and number of doses received. Methods: This cohort study included 2,200,495 females aged 10-35 years old who were residents of Sweden between 2006 and 2022, with 584,676 (26.6%) receiving at least one dose of quadrivalent HPV vaccine. We used Poisson regression models to estimate the incidence rate ratios (IRR) comparing the incidence rate of high-grade cervical lesions in relation to age at vaccination and doses. Findings: In girls initiating vaccination before age 15, we observed IRRs of 0.42 (95% CI 0.33-0.52) after one-dose, 0.54 (0.47-0.63) after two-dose, and 0.50 (0.47-0.53) after three-dose. The IRRs were 0.60 (95% CI 0.52-0.70), 0.55 (0.49-0.62), and 0.54 (0.52-0.56) after one, two or three doses for girls who initiated vaccination age 15-17. For women who initiated vaccination after age 20, higher doses may be needed to achieve a statistically significant risk reduction. Interpretation: Receiving one or two doses of HPV vaccines prior to age 17, especially for those initiating before age 15, has comparable effectiveness against high-grade cervical lesions with those who received three doses. Funding: Swedish Research Council, Swedish Research Council for Health, Working Life and Welfare, and Karolinska Institutet.

Indexed as

Cervical cancerCervical lesionsHPV vaccinePublic healthVaccine effectiveness

Identifiers

PMID39989876
PMCPMC11846428

What OpenQuestion holds

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Registered trials

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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.