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Flu

The Flu Autumn Winter vaccination programme started 1 September 2025 and will be available until 31 March 2026.

Flu occurs every year, usually in the winter, which is why it’s sometimes called seasonal flu. It is caused by influenza viruses that infect the windpipe and lungs, and because it’s caused by viruses and not bacteria, antibiotics won’t treat it. 

The best protection against flu is the flu vaccine. It is safe and effective and it’s offered every year on the NHS to help protect people at risk of flu and its complications.

The best time to have the flu vaccine is in the autumn before flu starts spreading.

Women looking at vaccinated arm. Text reads: Think Vaccination.

Flu symptoms:

Flu symptoms come on very quickly and can include:

  • a sudden high temperature of 38C or above
  • an aching body
  • feeling tired or exhausted
  • a dry cough
  • a sore throat
  • a headache
  • difficulty sleeping
  • loss of appetite
  • diarrhoea or tummy pain
  • feeling sick and being sick

The symptoms are similar for children, but they can also get pain in their ear and appear less active.

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Page last updated 24 October 2025

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