Safety, Immunogenicity Study of GSK Biologicals' Pandemic Influenza Candidate Vaccine (H1N1) (GSK2340272A)

Safety and Immunogenicity Study of GSK Biologicals' Pandemic Influenza Candidate Vaccine (GSK2340272A) in Children Aged 6 to 35 Months

This trial is designed to assess the safety and immunogenicity of a prime-boost schedule of GSK Biologicals' investigational vaccine GSK2340272A in children aged between 6 and 35 months.

This protocol posting has been updated following protocol amendment 4, March 2010. The protocol posting sections impacted are number of subjects, primary and secondary endpoints and intervention.

Inclusion Criteria:

• Subjects who the investigator believes that their parent(s)/Legally Acceptable Representative(s) (LAR) can and will comply with the requirements of the protocol
• Children, male or female, aged between 6 and 35 months at the time of first study vaccination.
• Written informed consent obtained from the parent(s) or LAR(s) of the subject.
• Healthy children, as established by medical history and clinical examination when entering the study.
• Parent/LAR with access to a consistent means of telephone contact, land line or mobile, but NOT a pay phone or other multiple-user device.

Exclusion Criteria:

• Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the first dose of the study vaccine or planned use during the study period.
• Clinically or virologically confirmed influenza infection within six months preceding the study start.
• Planned administration of any vaccine 30 days prior and 30 days after any study vaccine administration.
• Chronic administration of immunosuppressants or other immune-modifying drugs within three months prior to enrolment in this study or planned administration during the study period.
• Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination
• Acute or chronic, clinically-significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by medical history and physical examination.
• History of hypersensitivity to vaccines.
• History of allergic disease or reactions likely to be exacerbated by any component of the vaccines
• History of any neurological disorders or seizures.
• Acute disease and/or fever at the time of enrolment
• Administration of immunoglobulins and/or any blood products within the three months prior to the enrolment in this study, or planned during the study.
• Any condition which, in the opinion of the investigator, renders the subject unfit for participation in the study.
• Child in Care.