Early influenza virus characterisation and vaccine effectiveness in England in autumn 2025

Early UKHSA data show good flu vaccine effectiveness despite the drifted subclade K strain.

NHS England · Primary Care Bulletin item

Early influenza virus characterisation and vaccine effectiveness in England in autumn 2025

Published 20 November 2025 · Vaccinations & screening

← NHS England Primary Care Bulletin – 20 November 2025

NHSENews

In brief Early UKHSA data show good flu vaccine effectiveness despite the drifted subclade K strain.

Read the full item in the bulletin ↗

From NHS England’s Primary Care Bulletin, issue 366, 20 November 2025. Also in the bulletin on 27 Nov. Headline is NHS England’s; summary by BLMC. The full bulletin is also published on patient.info.