Human papillomavirus infection has clearly been recognized as the cause of cervical cancer. Indeed, the infection of the cervix by certain oncogenic types of HPV, if not cleared , can lead over time to cervical cancer in women . This study will evaluate the immune response induced by the HPV-16/18 L1/AS04 vaccine and the safety of the vaccine.

The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Inclusion Criteria:

All subjects must satisfy the following criteria at study entry:

• Subjects who the investigator believes that they can and will comply with the requirements of the protocol should be enrolled in the study.
• A female between, and including, 18 and 35 years of age at the time of the first vaccination.
• Written informed consent obtained from the subject.
• Healthy subjects as established by medical history and clinical examination before entering into the study.
• Subjects must have a negative urine pregnancy test.
• Subjects of childbearing potential at the time of study entry must be abstinent or must be using adequate contraceptive precautions for 30 days prior to vaccination and must agree to continue such precautions for two months after completion of the vaccination series.

Exclusion Criteria:

The following criteria should be checked at the time of study entry. If any apply, the subject must not be included in the study:

• Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine/ control within 30 days preceding the first dose of study vaccine/ control, or planned use during the study period.
• Pregnant or breastfeeding.
• Planning to become pregnant or likely to become pregnant.
• Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to the first vaccine dose.
• Planned administration/administration of a vaccine not foreseen by the study protocol within 30 days (Days 1 to 30) before and 30 days (Day 0- Day 29) after the first dose of vaccine. Administration of routine meningococcal, hepatitis B, inactivated influenza, diphtheria/tetanus and/or diphtheria/tetanus-containing vaccine up to 8 days before the first dose of study vaccine is allowed.
• Previous administration of components of the investigational vaccine.
• Previous vaccination against HPV.
• Any medically diagnosed or suspected immunodeficient condition based on medical history and physical examination.
• History of allergic disease, suspected allergy or reactions likely to be exacerbated by any component of the study vaccines.
• Hypersensitivity to latex.
• Known acute or chronic, clinically significant neurologic, hepatic or renal functional pulmonary, cardiovascular abnormality, as determined by previous physical examination or laboratory tests.
• History of chronic condition(s) requiring treatment.
• Administration of immunoglobulins and/or any blood product within three months preceding the first dose of study vaccine/ control or planned administration during the study period. Enrolment will be deferred until condition is resolved.
• Acute disease at the time of enrolment. Acute disease is defined as the presence of a moderate or severe illness with or without fever.

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Events collected by systematic assessment are reported for subjects with a symptom diary card available.

Events collected by non-systematic method are reported for the Total Vaccinated Cohort