Vaccine
http://www.sciencedirect.com/science/journal/0264410X
Volume 30, Issue 33 pp. 4897-5058 (13 July 2012)

Regular Papers
Human papillomavirus vaccination and sexual behaviour: Cross-sectional and longitudinal surveys conducted in England
Original Research Article
Pages 4939-4944
Alice S. Forster, Laura A.V. Marlow, Judith Stephenson, Jane Wardle, Jo Waller

Abstract
Objective
To examine whether HPV vaccination influences sexual behaviour in adolescent girls, either by giving them a ‘green light’ to have sex, or because perceived protection afforded by the vaccine permits compensatory risky sexual behaviour.

Design
Cross-sectional and longitudinal surveys.

Setting
Seven English schools.

Main outcome measures
Self-reported sexual behaviour.

Participants
The cross-sectional survey included 1053 girls (mean age 17.1 years) who had (n = 433 recruited in March 2010) or had not (n = 620 recruited in March 2009) been offered the HPV vaccine. The longitudinal survey included 407 girls (mean age 17.5 years) who had been offered HPV vaccination and had either received at least one dose (n = 148) or had not received any doses (n = 259).

Results
In the cross-sectional survey, the group of girls who had been offered the HPV vaccine were no more likely to be sexually active than the group of girls who had not been offered the HPV vaccine. In the longitudinal survey, the vaccinated group were no more likely to have changed their condom use or increased their total number of sexual partners than the unvaccinated group.

Conclusions
Neither being offered the HPV vaccine nor receiving it affected sexual behaviour