WHO Media: Recommendations announced for influenza vaccine composition for the 2024-2025 northern hemisphere influenza season ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌

No images? Click here Friday 23 February 2024 News Release Recommendations announced for influenza vaccine composition for the 2024-2025 northern hemisphere influenza season 23 February 2024  The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2024-2025 influenza season in the northern hemisphere. The announcement was made at an information session after a 4-day meeting on the Composition of Influenza Virus Vaccines. The meeting is held twice annually, once for the southern and once for the northern hemisphere.  WHO organizes these consultations with an advisory group of experts gathered from WHO Collaborating Centres and WHO Essential Regulatory Laboratories to analyse influenza virus surveillance data generated by the WHO Global Influenza Surveillance and Response System (GISRS). The recommendations issued are used by the national vaccine regulatory agencies and pharmaceutical companies to develop, produce, and license influenza vaccines for the following influenza season.  The periodic update of viruses contained in influenza vaccines is necessary for the vaccines to be effective due to the constant evolving nature of influenza viruses, including those circulating and infecting humans. 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, the WHO recommends inclusion of the following as the B/Yamagata lineage component: a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus. Related links: LIVE: WHO Information Meeting, influenza virus vaccine composition for 2024-2025 Northern Hemisphere (youtube.com) Global Influenza Programme (who.int) Frequently Asked Questions - Recommended composition of influenza virus vaccines Seasonal candidate vaccine viruses and potency testing reagents for development and production of vaccines Zoonotic candidate vaccine viruses and potency testing reagents for development and production of vaccines   Media contact: mediainquiries@who.int     You are receiving this NO-REPLY email because you are included on a WHO mail list. If you have been forwarded this update you can click here to subscribe. Journalists may send feedback to WHO Media Team         Share    Tweet    Share    Forward  World Health Organization, Avenue Appia 20, 1202 Geneva 27, Switzerland  Unsubscribe