Flublok Quadrivalent is a quadrivalent recombinant influenza vaccine. Flublok Quadrivalent consists of the four influenza strains that have been identified to be the most likely strains for the flu season. A recombinant flu vaccine is produced using a method which does not require an egg-grown vaccine virus and does not use chicken eggs in the production process.
Flublok Quadrivalent is indicated for active immunization for the prevention of influenza disease caused by influenza A subtype viruses and type B virus(es) contained in each vaccine. Flublok Quadrivalent vaccine is approved for use in persons 18 years of age and older.
Flublok Quadrivalent is administered as an intramuscular (IM) injection.