Approved for Fluzone ® High-Dose Quadrivalent is a vaccine indicated for active immunization for the prevention of disease caused by influenza A subtype viruses and type B viruses contained in the vaccine. Fluzone High-Dose Quadrivalent is indicated for use in persons 65 years of age and older.. Specific levels of hemagglutination inhibition (HI) antibody titer post-vaccination with inactivated…
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