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Abstract
During 2009–2011, we reported that the oral and cervical prevalence of human papillomavirus (HPV) was high by international standards at 9.3% and 74%, respectively, in youth aged 15–23 years attending a youth clinic in Stockholm. After gradual introduction of public HPV vaccination during 2007–2012, between 2013 and 2014, when 73% of the women were HPV-vaccinated, but not necessarily before their sexual debut, oral HPV prevalence had dropped to 1.4% as compared with 9.3% in 2009–2011 (p < 0.00001). Cervical HPV prevalence was high and common cervical high-risk types were HPV51, 56, 59, 73, 16, 39, 52, and 53. However, it was shown that HPV16, 31, and 70 were significantly less common among HPV-vaccinated women than among those who had not received the vaccine.
Acknowledgments
The midwives and personnel Kicki Bergström, Ingrid Madarasz, Ingela Permats, Lina Isaksson, and Sofie Adolfsson, as well as the youth at the youth clinic in Stockholm, Sweden are greatly acknowledged for their efforts and collaboration. This work was supported by: the Swedish Research Council; the Swedish Cancer Foundation; the Stockholm Cancer Society; the Cancer and Allergy Foundation; Henning and Ida Persson's Research Foundation; the Stockholm City Council; the Karolinska Institutet; and the Swedish Institute for Infectious Disease Control, Sweden.
Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.