Non-Inferiority of Meningococcal Vaccine GSK134612 Versus Mencevax™ in 2-10 Year Old Subjects

Non-inferiority of GSK Biologicals' Meningococcal Vaccine GSK134612 Versus Mencevax™ in Healthy Subjects Aged 2 Through 10 Years of Age

The purpose of this study is to demonstrate, in 2-10 year old subjects, the non-inferiority of meningococcal vaccine GSK134612 compared to licensed meningococcal vaccine Mencevax™.

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

Multicentre study with 2 treatment groups. Two blood samples will be taken, prior to and one month after vaccination, from the first 75% enrolled subjects per country independent of the treatment group.

Inclusion Criteria:

• Subjects who the investigator believes that their parents or guardians can and will comply with the requirements of the protocol.
• A male or female between, and including, 2 and 10 years of age at the time of vaccination.
• Written informed consent obtained from the parent or guardian of the subject.
• Free of obvious health problems as established by medical history and clinical examination before entering into the study.
• Previously completed routine childhood vaccinations to the best of his/her parents'/guardians' knowledge.

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 within six months prior to the first vaccine dose.
• Planned administration/ administration of a vaccine not foreseen by the study protocol within one month of the dose of vaccine.
• Previous vaccination with meningococcal polysaccharide vaccine of serogroup A, C, W-135 and/or Y (for subjects below 6 years) or within the last five previous years (for subjects 6 years old or above).
• Previous vaccination with meningococcal polysaccharide conjugate vaccine of serogroups A, C, W-135 and/or Y.
• Previous vaccination with tetanus toxoid within the last month.
• History of meningococcal disease.
• Any confirmed or suspected immunosuppressive or immunodeficient condition (congenital or secondary), including human immunodeficiency virus (HIV) infection, based on medical history and physical examination..
• History of reactions or allergic disease likely to be exacerbated by any component of the vaccine(s).
• Major congenital defects or serious chronic illness.
• Acute disease at the time of enrolment.
• Administration of immunoglobulins and/or any blood products within the three months preceding the first dose of study vaccine or planned administration during the study period.