- To describe the immunogenicity of the 2014-2015 formulations of Fluzone® Quadrivalent and Fluzone® Intradermal vaccines in adults 18 to < 65 years of age and the immunogenicity of the 2014-2015 formulations of Fluzone® Quadrivalent and Fluzone ®High-Dose vaccines in adults ≥ 65 years of age.