R.I.P. Scout26
I'm curious why they don't expand it to cover more than one strain? Lets say, the top 3 strains they think may be prevalent this year, instead of just one?
Each seasonal influenza vaccine contains three influenza viruses: one influenza type A subtype H3N2 virus strain, one influenza type A subtype H1N1 (seasonal) virus strain, and one influenza type B virus strain.[2] A quadrivalent flu vaccine administered by nasal mist was approved by the U.S. Food and Drug Administration (FDA) in March 2012.