The vaccine is most effective before they become sexually active.
Australian Government Funding Of Gardasil®
Fact sheet about the Human Papilloma Virus (HPV) vaccines.
An ongoing target group of 12 and 13 year old girls in a school-based program, generally delivered in the first year of high school
A catch-up group of 13-18 year old girls in a largely school-based program
A further catch-up group of women up to and including 26 years of age in a community-based program generally delivered through general practice.
http://www.health.gov.au/internet/wc...rdasil_hpv.htm