The UK Health Security Agency (UKHSA) warns that many eligible individuals may be unaware they qualify for a flu vaccine. Despite 9 million people under 65 in clinical risk groups being eligible, only 40% were vaccinated in 2024–25. This leaves over 5 million at risk and unprotected.
For certain clinical groups, the risk of death related to influenza is significantly greater than for the general population.
“For some clinical groups the risk of influenza-related mortality compared with the general population is much higher.”(1)
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Author's summary: Despite eligibility, millions with long-term health conditions, especially under 65, miss flu vaccination, leaving them vulnerable to serious influenza risks.