Europe – EU recommendations for 2022-2023 seasonal flu vaccine composition

EMA has issued the recommendations for the influenza virus strains that vaccine manufacturers should include in vaccines for the prevention of seasonal influenza from autumn 2022.

Manufacturers of egg-based or live attenuated quadrivalent vaccines for the 2022-2023 season should include these four virus strains:

  • an A/Victoria/2570/2019 (H1N1)pdm09-like virus;
  • an A/Darwin/9/2021 (H3N2)-like virus;
  • a B/Austria/1359417/2021 (B/Victoria lineage)-like virus; and
  • a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus.

Manufacturers of cell-based quadrivalent vaccines for the 2022-2023 season should include these four virus strains…