Influenza Clinical Trial
Official title:
A Phase II, Randomized, Open, Controlled Study to Evaluate the Safety and Immunogenicity of Different Formulations of a Pandemic Influenza Vaccine Candidate (Split Virus Formulation Adjuvanted With AS03) Given Following a Two-administration Schedule (21 Days Apart) in Children Between 3 and 9 Years of Age.
The present study is designed to evaluate in children (aged between 3 and 9 years) the immunogenicity and safety of different antigen doses of the candidate vaccine (GSK1562902A) administered following a two-administration schedule (21 days apart). Subjects in the control group will receive Fluarix. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
This 107066 study is a participating study to the broader NCT00502593 study, which included 2 other studies, the 108498 and 108500 studies. The NCT00502593 study had a staggered design (subjects from each group being enrolled sequentially into 2 age strata, '6-9 years' 1st, and '3-5 years' next) and was run in 3 phases, phases A (Study 107066), B (Study 108498) and C (Study 108500). In each phase, the decision to vaccinate subjects aged 3-5 years and to administer a 2nd injection to subjects aged 6-9 years was made based on safety data collected on Days 0-6 after the 1st injection for the subjects aged 6-9 years. Decision to start Phase B was made on complete safety data including those collected on Day 28 of Phase A (7 days after the 2nd injection) for each age group. A similar approach was to be used to start Phase C. As safety data in Phase A did not raise any safety concerns, Phases B and C were run in parallel. ;
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