FluMist Quadrivalent is an Intranasal vaccine that is a live quadrivalent vaccine that is formulated to contain four vaccine virus strains, for 2018-2019, an A/H1N1 strain, and A/H3N2 strain, and two B strains, the B/Yamagata/16/88 and B/Victoria/2/87 lineages.
FluMist is indicated for people ages 2-49 to prevent influenza.
FluMist Quadrivalent is a vaccine that is sprayed into the nose to help protect against influenza.
It works in 3 ways—in your nose, your cells, and your bloodstream—to help provide flu protection.
Like the flu shot, immunity occurs within 14 days.