Flu Vaccine Options for Older Adults. Trade namePresentationAge indication Empty CellLatexRoute Afluria Quadrivalent 0.5 mL prefilled syringe ≥18 years No IM 5.0 mL multidose vial ≥18 years (by needle/syringe) 18 through 64 years (by jet injector) No IM Fluarix Quadrivalent 0.5 mL...