Pre-vaccination seroprevalence of 15 human papillomavirus (HPV) types among women in the population-based Slovenian cervical screening program.

•We tested sera from 3259 Slovenian women for 15 HPV type specific antibodies.•Seropositivity for any of 11 hr-HPV and any of 4 lr-HPV types was 59.2% and 33.1%.•Seropositivity for at least one of the HPV types 6, 11, 16, and 18 was 40.8%.•Our estimated HPV16 seroprevalence (25.2%) was higher than in other studies.•We show a substantial lifetime sexual exposure to HPV types included in vaccines.