Syndromic surveillance summary: 16 October 2025 week 41
Updated 16 October 2025
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Reporting week 41: 5 to 12 October 2025
During week 41 there were continued increases in respiratory indicators, in line with seasonal expectations. There were further small increases in influenza-like illness, particularly in the 5 to 14 and 15 to 44 years age groups, in the GP in-hours (GPIH) and emergency department (ED) systems. ED and GP in-hours COVID-19-like indicators decreased across most age groups.
Remote health advice syndromic surveillance system
During week 41, NHS 111 acute respiratory infection triaged calls continued to increase in children aged 1 to 4 and adults aged 15 to 44, with other age groups remaining stable. Online assessments for acute respiratory infection remained stable nationally and in all age groups. NHS 111 triaged calls and online assessments for vomiting increased in line with seasonal expectations.
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GP in-hours syndromic surveillance system
During week 41, the GP in-hours COVID-19-like consultation rate decreased across most age groups. There were continued increases in upper and lower respiratory tract infection indicators, both in line with seasonally expected levels and mainly across adult age groups. There was a further small increase in influenza-like illness consultations, particularly in the 5 to 14 and 15 to 44 years age groups. Additionally, vomiting and gastroenteritis consultation rates increased, primarily in children aged under 5 years. There was a further increase noted in impetigo with activity remaining above expected levels.
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GP out-of-hours syndromic surveillance system
During week 41, GP out-of-hours consultations for acute bronchitis/bronchiolitis increased but remained similar to seasonally excepted levels.
Note: there was a spike in the number of daily contacts for influenza-like-illness (ILI) recorded on Sunday 28 September. These ILI contacts were predominantly in adults aged 65 years and over in one region and are therefore likely to have resulted from a small localised outbreak, for example, in a care home. The recent ILI trend should therefore be interpreted with caution.
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Emergency department syndromic surveillance system
During week 41, ED acute respiratory infection attendances increased, particularly in children aged 1 to 14 years, in line with seasonal expectations. Influenza-like illness attendances continued to increase in children aged 1 to 14 and adults aged over 45 years whilst decreasing slightly in the 15 to 44 years age group. Attendances for acute bronchiolitis remained stable and below seasonally expected levels. Attendances for scarlet fever continued to increase above baseline, although there was a slight decrease in the most recent data.
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Ambulance syndromic surveillance system
During week 41, daily ambulance calls for ‘difficulty breathing’ were no longer increasing and remained below seasonally expected levels.