A Controlled Trial to Assess the Immunogenicity of a Proposed Paediatric Dosing Schedule of Human Papillomavirus Vaccine

Inclusion Criteria:

* A female between, and including, 9-13 years (before 14th birthday) and 16-26 years of age (before 27th birthday) at the time of the first vaccination.
* Healthy
* Not pregnant
* Four or less sexual partners over lifetime as reported by subject. (Sexual activity is defined as intercourse)
* Not planning to become pregnant or likely to become pregnant
* No reported history of genital warts
* No laboratory confirmed history of cervical intraepithelial neoplasia
* No previous vaccination against HPV
* No administration of immunoglobulin and/or any blood products within the three months preceding the first dose of study vaccine or planned administration during the study period
* No previous anaphylactic reaction to HPV vaccine or any vaccine related component including aluminum hydroxyphosphate sulfate and polysorbate 80
* No confirmed or suspected immunosuppressive or immunodeficient condition based on medical history
* No bleeding diathesis or condition associated with prolonged bleeding time that would contraindicate intramuscular injection.
* Cannot be already enrolled in any clinical trial in which investigational vaccine or drug are being administered

Exclusion Criteria

* Pregnant
* Female planning to become pregnant or likely to become pregnant (as determined by the investigator) during the study duration Part 1 (0-7 months)
* Reported history of genital warts
* Laboratory confirmed history of cervical intraepithelial neoplasia
* Greater than four lifetime sexual partners involving sexual intercourse
* Previous vaccination against HPV
* Administration of immunoglobulin and/or any blood products within the three months preceding the first dose of study vaccine or planned administration during the study period
* A previous anaphylactic reaction to HPV vaccine or any vaccine related component including aluminum hydroxyphosphate sulfate and polysorbate 80
* Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history (e.g. HIV infection, genetic defect, immunosuppressive therapy). \*Chronic administration (defined as more than 14 days) of immune-modifying drugs within 6 months prior to the first vaccine dose or planned use during the study period is exclusionary (corticosteroid use - immune-modifying level is ≥0.5 mg/kg/day; inhaled or topical steroids are acceptable).
* Bleeding diathesis or condition associated with prolonged bleeding time that would contraindicate intramuscular injection (thrombocytopaenia, coagulation disorder, anti-coagulant therapy).
* Enrollment in any clinical trial in which investigational vaccine or drug are being administered