A Study to Evaluate the Efficacy of GSK Biologicals' Influenza Vaccine in Children

Efficacy Study of GSK Biologicals' Quadrivalent Influenza Vaccine, GSK2282512A, (FLU Q-QIV) When Administered in Children

This study is designed to test the efficacy of an investigational influenza vaccine, in children compared to Havrix®, a licensed Hepatitis A virus vaccine.

This study will also evaluate the immunogenicity and safety of the investigational vaccine.

Inclusion Criteria:

• Subjects who the investigator believes that they and/or their parent(s) or legally acceptable representative(s) can and will comply with the requirements of the protocol.
• A male or female child aged between 3 and 8 years inclusive at the time of the first vaccination; children are eligible regardless of history of administration of influenza vaccine in a previous season. However, subjects who have received any seasonal or pandemic influenza vaccine within 6 months preceding the first dose of study vaccine will not be enrolled.
• Written informed consent obtained from the subject/from the parent(s)/legally acceptable representative(s) of the subject.
• Written assent obtained from the subject if/as required by local regulations.
• Subjects in stable health as determined by investigator's clinical examination and assessment of subjects' medical history.
• Access to a consistent means of telephone contact

Exclusion Criteria:

• Child in care.
• Use of an investigational or non-registered product other than the study vaccines within 30 days before study vaccination or planned use during study period. Routine registered childhood vaccinations are permitted.
• Prior receipt of any seasonal or pandemic influenza vaccine within 6 months preceding the first dose of study vaccine, or planned use of such vaccines during the study period. Prior receipt of more than one dose of a licensed hepatitis A vaccine, with the first dose administered at >=12 months of age.
• Chronic administration of immunosuppressants or other immune-modifying drugs within 6 months prior to the first vaccine dose.
• Administration of immunoglobulins and/or any blood products within the 3 months preceding the first dose of study vaccine or planned administration during the study period.
• History of Guillain-Barre syndrome within 6 weeks of receipt of prior influenza virus vaccine.
• Any known or suspected allergy to any constituent of influenza vaccines ; a history of anaphylactic-type reaction to constituent of vaccine; or a history of severe adverse reaction to a previous influenza vaccine.
• Fever at the time of enrolment.
• Acute disease at the time of enrolment.
• Any significant disorder of coagulation or treatment with Coumadin derivatives or heparin.
• Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
• Ongoing aspirin therapy.
• Any other condition which, in the opinion of the Investigator, prevents the subject from participating in the study.