A phase III, open-label, multicentre study to evaluate the immunogenicity, safety and reactogenicity of a revaccination dose of the GlaxoSmithKline Biologicals' quadrivalent seasonal influenza candidate vaccine GSK2321138A, administered to children who pr

To assess the immune response in terms of Haemagglutination Inhibition (HI) antibody titre at Day 7 after one dose of FLU D-QIV vaccine (2012-2013 formulation) in vaccine-primed and vaccine-unprimed subjects, for all strains included in the vaccine.