Primary Objective: To demonstrate that QIV-HD induced an immune response (as assessed by hemagglutination inhibition \[HAI\] geometric mean titers \[GMTs\] and seroconversion rates) that was superior to responses induced by QIV-SD for the 4 virus strains at 28 days post-vaccination in all participants. Secondary Objective: * To describe the immune response induced by QIV-HD and QIV-SD by HAI measurement method in all participants. * To describe the safety profile of all participants in each study group.
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Geometric Mean Titers (GMTs) of Influenza Vaccine Antibodies at Day 28
Timeframe: Day 28 (post-vaccination)
Percentage of Participants Achieving Seroconversion Against Influenza Virus Antigens: Superiority Analysis
Timeframe: Day 28 (post-vaccination)