Week 48, 24 November to 30 November 2025
National Syndromic Surveillance Summary:
During week 48 there were further increases in acute respiratory infection indicators across syndromic systems, with continuing increasing activity particularly noted in children aged 1 to 4 and 5 to 14 years. Influenza-like illness (ILI) indicators also continued to increase during week 48, with activity remaining above seasonally expected levels. Increases in ILI indicators were again observed in children aged between 1 and 14 years. Acute bronchiolitis indicators increased in children aged less than 5 years during week 48, however activity remained below levels expected for the time of year.
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Of note this week:
Chart showing daily Emergency department influenza-like illness attendances (and 7-day moving average) by age (years); including 143 EDs in England.
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