Inclusion Criteria:

- Subjects enrolled in the primary study (NCT00306241) who received the placebo
(aluminium hydroxide [Al(OH)3]).

- A female who is unable to receive all three doses of commercially available Cervarix
before her 25th birthday.

- Written informed consent obtained from the subject (prior to enrolment).

- Healthy subjects as established by medical history and clinical examination before
entering into the study.

- Subjects must have a negative urine pregnancy test.

- Subjects must be of non-childbearing potential or, if the subject is of childbearing
potential, she must be abstinent (and if so, this must be documented in the source
documents at each vaccination visit) or must be using adequate contraception for 30
days prior to vaccination and continue for two months after completion of the
vaccination series.

Exclusion Criteria:

- Use of any investigational or non-registered product (drug or vaccine) other than the
study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned
use during the study period.

- Concurrently participating in another clinical study at any time during the study
period, in which the subject has been or will be exposed to an investigational or
non-investigational product (pharmaceutical product or device).

- Pregnant or breastfeeding.

- Planning to become pregnant or likely to become pregnant (as determined by the
investigator) or planning to discontinue contraceptive prevention during the study
period and up to two months after the last vaccine dose.

- History of allergic disease, suspected allergy or reactions likely to be exacerbated
by any component of the study vaccine.

- Hypersensitivity to latex (found in syringe-tip cap and plunger).

- Known acute or chronic, clinically significant neurologic, haematological, hepatic or
renal functional abnormality, as determined by previous physical examination or
laboratory tests.

- Cancer or autoimmune disease under treatment.

- Any confirmed or suspected immunosuppressive or immunodeficient condition, based on
medical history and physical examination.

- Previous administration of an adjuvant that used in the HPV-16/18 vaccine.

- Previous vaccination against HPV or planned administration of another HPV vaccine
during the study.

- Acute disease at the time of enrolment.