Safety of Hib-MenCY-TT Vaccine Versus Licensed Hib Conjugate Vaccine, Given at 2, 4, 6 and 12 to 15 Months of Age

The primary phase of this study is evaluating the safety of Hib-MenCY-TT vaccine compared to a control group receiving licensed Hib conjugate vaccine, when each are co-administered with Pediarix® to healthy infants at 2, 4, and 6 months of age.

This protocol posting deals with objectives \& outcome measures of the primary phase of the study. The objectives \& outcome measures of the Booster phase are presented in a separate protocol posting (NCT number = 00345683).

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

Pediarix/Infanrix Penta and Prevnar should be co-administered to all subjects in all study groups according to a 2, 4, and 6 month schedule concomitantly with study vaccines.

Eligibility Criteria:
Inclusion Criteria:

* Subjects for whom the investigator believes that parents/guardians can and will comply with the requirements of the protocol.
* A male or female between, and including, 6 and 12 weeks of age at the time of the first vaccination.
* Written informed consent obtained from the parent or guardian of the subject.
* Healthy subjects as established by medical history and clinical examination before entering into the study.
* Born after 36 weeks gestation.
* Infants who have not received a previous dose of hepatitis B vaccine or those who have received only 1 dose of hepatitis B vaccine administered at least 30 days prior to enrolment.
* Infants may have received a birth dose of Bacillus Calmette-Guérin (BCG) vaccine.

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.

* Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs since birth.
* Planned administration/ administration of a vaccine not foreseen by the study protocol within 30 days of the first dose of study vaccine(s).
* Previous vaccination against Neisseria meningitidis, Haemophilus influenzae type b, diphtheria, tetanus, pertussis, and/or poliovirus; more than one previous dose of hepatitis B vaccine.
* In country(ies) where Prevnar will be provided by GSK Biologicals, previous vaccination with Prevnar.
* History of Neisseria meningitidis, Haemophilus influenzae type b, diphtheria, tetanus, pertussis, hepatitis B, and/or poliovirus disease.
* Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination.
* History of allergic disease or reactions likely to be exacerbated by any component of the vaccines, including dry natural latex rubber.
* Major congenital defects or serious chronic illness.
* History of any neurologic disorders or seizures.
* Acute disease at time of enrollment.
* Administration of immunoglobulins and/or any blood products since birth or planned administration during the study period.
* Concurrent participation 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 a non-investigational product (pharmaceutical product or device).