These are all types

These are all types

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Every year the World Health Organization (WHO) releases information on Virus composition Because the viruses that cause influenza are constantly evolving, flu vaccines should contain these ingredients.


Regulators and pharmaceutical companies use these recommendations to develop, manufacture and license ingredients for antiviral vaccines. influenza. On this occasion, the World Health Organization recommends the following ingredients for the 2023-2024 season in the Northern Hemisphere.

quadrivalent vaccine

Produced from embryonated eggs:

  • A strain similar to A/Victoria/4897/2022 (H1N1)pdm09,

  • Strain similar to A/Darwin/9/2021 (H3N2),

  • Strains similar to B/Austria/1359417/2021 (B/Victoria lineage) and

  • A strain similar to B/Phuket/3073/2013 (B/Yamagata lineage).

Recombinants or recombinants produced in cell culture:


  • A strain similar to A/Wisconsin/67/2022 (H1N1)pdm09m,

  • Strain similar to A/Darwin/6/2021 (H3N2),

  • Strains similar to B/Austria/1359417/2021 (B/Victoria lineage) and

  • Strains similar to B/Phuket/3073/2013 (B/Yamagata lineage)

trivalent vaccine

Produced from embryonated eggs:

  • A strain similar to A/Victoria/4897/2022 (H1N1)pdm09,

  • Strains similar to A/Darwin/9/2021 (H3N2) and

  • Strains similar to B/Austria/1359417/2021 (B/Victoria lineage)

Recombinants or recombinants produced in cell culture:

  • A strain similar to A/Wisconsin/67/2022 (H1N1)pdm09,

  • Strains similar to A/Darwin/6/2021 (H3N2) and

  • Strains similar to B/Austria/1359417/2021 (B/Victoria lineage)




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