Public Health England (PHE) has today (Wednesday, 18 July 2018) published data on the effectiveness of the flu vaccine in the 2017 to 2018 season. The data show that overall, flu vaccine was 15% effective in all age groups. However, effectiveness varied considerably. By age-group, the vaccine was overall:

  • 26.9% effective in children aged 2 to 17 years (who received the nasal spray)
  • 12.2% in at risk groups aged 10 to 64 years
  • 10.1% in those aged 65 and over.


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