Reduction of low- and high-grade cervical abnormalities associated with high uptake of the HPV bivalent vaccine in Scotland

K G J Pollock, K Kavanagh, A Potts, J Love, K Cuschieri, H Cubie, C Robertson, M Cruickshank, T J Palmer, S Nicoll, M Donaghy

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In Scotland, a national HPV immunisation programme began in 2008 for 12-13 year olds, with a catch-up campaign from 2008-2011 for those under the age of 18. To monitor the impact of HPV immunisation on cervical disease at the population level, a programme of national surveillance was established.  We analysed colposcopy data from a cohort of women born between 1988-1992 who entered the Scottish Cervical Screening Programme (SCSP) and were aged 20-21 in 2008-2012.  By linking datasets from the SCSP and colposcopy services, we observed a significant reduction in diagnoses of cervical intraepithelial neoplasia 1 (CIN 1) (RR 0.71, 95% CI 0.58 to 0.87, p=0.0008), CIN 2 (RR 0.5, 95% CI 0.4, 0.63, p<0.0001) and CIN 3 (RR 0.45, 95% CI 0.35 to 0.58, p< 0.0001) for women who received 3 doses of vaccine compared with unvaccinated women.  To our knowledge, this is one of the first studies to show a reduction of low and high grade cervical intraepithelial neoplasia associated with high uptake of the HPV bivalent vaccine at the population level. These data are very encouraging for countries that have achieved high HPV vaccine uptake.
Original languageEnglish
Pages (from-to)1824-1830
Number of pages7
JournalBritish Journal of Cancer
Issue number9
Early online date2 Sep 2014
Publication statusPublished - 28 Oct 2014


  • adult
  • cervical intraepithelial neoplasia
  • cohort studies
  • colposcopy
  • female
  • follow-up studies
  • humans
  • mass screening
  • national health programs
  • neoplasm grading
  • papillomaviridae
  • papillomavirus infections
  • papillomavirus vaccines
  • prevalence
  • prognosis
  • Scotland
  • uterine cervical dysplasia
  • uterine cervical neoplasms
  • vaccination
  • vaccine potency
  • vaginal smears
  • young adult

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