2023-2024 Influenza Vaccine Strains released (Japan)

The World Health Organization (WHO) has formed a committee of expert advisors tasked with assessing influenza virus surveillance data, produced by the WHO Global Influenza Surveillance and Response System (GISRS). Based on these assessments, the committee provides guidance on the composition of the upcoming influenza season vaccines. The proposed strains for inclusion in the vaccine production, set to begin shortly, are as follows:

  • A/Victoria/4897/2022 (IVR-238)(H1N1)
  • A/Darwin/9/2021 (SAN-010)(H3N2)
  • B/Phuket/3073/2013(Yamagata lineage)
  • B/Austria/1359417/2021(BVR-26)(Victoria lineage)

Our projected timeline anticipates vaccine availability by October 2023.