Protein Sciences announced that the Food and Drug Administration has approved Flublok (trivalent recombinant hemagglutinin [rHA] influenza vaccine) for all adults aged 18 and older.

Previously, Flublok was approved for use in adults aged 18–49 for active immunization against influenza virus subtypes A and B. Flublok is a pure influenza vaccine that does not contain egg proteins, preservatives, antibiotics, gelatin, or latex. It contains three times more antigen than traditional flu vaccines.

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Flublok is supplied as 0.5mL single-dose vials in 10-count cartons.

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