New mutated strain of flu driving 'worst illness in a decade' across UK

New Mutated Flu Strain Sparks Severe Illness in the UK

The United Kingdom is facing an early and intense flu season caused by a new mutated strain, which experts warn could result in thousands of deaths this year.

Severity and Early Spread

This flu season is expected to be the worst in a decade, surpassing last year’s toll of 8,000 deaths and the previous season’s 16,000 fatalities. The new strain began spreading earlier than usual and seems more contagious.

Global and Local Responses

Characteristics of the New Strain

The emerging flu variant is described as "hotter and nastier" than typical flu strains seen in the UK. It carries seven new mutations in the H3N2 variant, first noticed in June this year.

“We haven't seen a virus like this for a while, these dynamics are unusual. It does concern me, absolutely. I'm not panicking, but I am worried.”

— Professor Nicola Lewis, World Influenza Centre, Francis Crick Institute

“It almost certainly will sweep the world.”

— Professor Derek Smith, Centre for Pathogen Evolution, University of Cambridge

Current Situation in the UK

Since September, flu cases have surged dramatically, and experts link this to the increased transmissibility of the mutated strain.

Summary: A new, early-spreading mutated flu strain is causing alarm due to its high contagion and severity, prompting urgent health measures in the UK and globally.

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The Mirror The Mirror — 2025-11-09