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HPV Shots Show Community Protection as U.S. Study Reports Steep Infection Declines

Researchers report large infection declines across vaccinated, unvaccinated women within a high‑uptake U.S. cohort.

Overview

  • A JAMA Pediatrics study tracking more than 2,300 young women in Cincinnati from 2006 to 2023 found sharp drops in vaccine‑type HPV as vaccination coverage rose to 82%.
  • Among vaccinated participants, infections fell 98% with the 2‑valent vaccine, 94% with the 4‑valent vaccine, and 76% with the 9‑valent vaccine.
  • Unvaccinated women recorded 72% to 76% declines in HPV types covered by earlier vaccines, evidence consistent with herd protection in a gender‑neutral program.
  • Researchers said the reductions reflect vaccination rather than shifts in sexual behavior and cautioned that herd effects for the 9‑valent vaccine are not yet confirmed.
  • Pakistan has begun its first national HPV vaccination campaign and continues to face underreporting, misinformation and a significant cervical cancer burden, with thousands of cases and deaths reported in 2023.