'Nastier' mutant strain means UK could see worst flu season in a decade View Image

People are being urged to get vaccinated against the flu after a new mutated variant of the virus, capable of evading the human immune system, saw 'flu season' start a month early in the UK. Experts say the new strain could mean the country has the worst flu season for a decade.

Professor Nicola Lewis, director of the World Influenza Centre at the Francis Crick Institute, told the BBC : " 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."

Experts say there was a sudden mutation in the flu virus detected in June this year, with seven new mutations in the H3N2 variant. Professor Derek Smith, director of the cen

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