WHO released the recommended composition of influenza virus vaccines for use in the 2026 southern hemisphere influenza season. They are:
- an A/Missouri/11/2025 (H1N1)pdm09-like virus;
- an A/Sydney/1359/2024 (H3N2)-like virus;
- a B/Austria/1359417/2021 (B/Victoria lineage)-like virus;
At Immune Tech, we provide the following 2025-2026 seasonal flu HA proteins —
IT-003-00122ΔTMp
IT-003-00122p
IT-003-00449ΔTMp
IT-003-00449p
IT-003-B23ΔTMp
IT-003-B23p
In addition, the current dominant flu strain is a variant of the influenza a H3N2 virus, dubbed as the “subclade K” strain. This subclade K strain is being referred to as the ‘super flu,’ a new flu strain (variant of influenza A H3N2) that is currently spreading rapidly in the U.S. This flu is associated with more severe symptoms and more severe cases than typical flu, leading to serious illness and increased hospitalizations. At Immune Tech, we provide the following HA proteins related to this subclade K strain —