Recommended Composition of Flu Vaccines for 2024-2025
The WHO recommends that trivalent vaccines for use in the 2024-2025 northern hemisphere influenza season contain the following: Egg-based vaccines an A/Victoria/4897/2022 (H1N1)pdm09-like virus; an A/Thailand/8/2022 (H3N2)-like virus; and a B/Austria/1359417/2021 (B/Victoria lineage)-like virus. Cell culture- or recombinant-based vaccines an A/Wisconsin/67/2022 (H1N1)pdm09-like virus; an A/Massachusetts/18/2022 (H3N2)-like virus; and a B/Austria/1359417/2021 (B/Victoria lineage)-like virus. For quadrivalent egg- or cell culture-based or recombinant vaccines for use in the 2024-2025 northern hemisphere influenza season: While the B/Yamagata lineage vaccine component should be excluded as it is no longer warranted, where quadrivalent vaccines are still in use, the B/Yamagata lineage component remains unchanged: Egg-, cell- or Read More …