Syndromic surveillance summary: 25 January 2026 week 4
Updated 29 January 2026
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Reporting week 4: 19 to 25 January 2026
During week 4, influenza-like illness indicators continued to decrease across syndromic systems with activity now at or below expected levels. Acute respiratory infection indicators were broadly stable or decreasing overall, however there were increases in activity observed in children aged under 15 years. There were also small increases in acute bronchiolitis indicators in children aged under 5 years in the ED and GP out-of-hours systems.
Remote health advice syndromic surveillance system
During week 4, NHS 111 triaged calls and online assessments for acute respiratory infections remained stable or decreased nationally, but with small continuing increases observed in children aged under 15 years. Triaged calls for diarrhoea increased, particularly among children aged 1 to 4 years. Calls for eye problems also increased, mainly in children aged 1 to 4 years, with levels slightly above the seasonal average.
Access the remote health advice syndromic surveillance bulletins
GP in-hours syndromic surveillance system
During week 4, GP in hours consultation rates for influenza-like illness continued to decrease with activity currently below seasonally expected levels. Upper respiratory tract infections were stable while lower respiratory tract infections decreased, however there were increases observed in children aged under 15 years in both indicators. There was also a small increase noted in acute bronchiolitis consultations in children aged under 1 and 1 to 4 years. During week 4 there was an increase in vomiting consultations.
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GP out-of-hours syndromic surveillance system
During week 4, GP out-of-hours daily contacts for acute respiratory infections continued to decrease nationally but there were continued increases noted in children aged under 15 years. Similarly, contacts for ‘difficulty breathing or wheeze or asthma’ remained stable overall but with increases in children. Influenza-like illness contacts decreased and are at expected levels. Contacts for gastroenteritis and diarrhoea increased and are above seasonally expected levels.
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Emergency department syndromic surveillance system
During week 4, ED attendances for acute respiratory infections (ARI) remained stable and at seasonally expected levels, however there was an increase in ARI attendances in children aged under 15 years. Attendances for influenza-like illness continued to decrease nationally and across all regions and age groups. There was a slight increase in attendances for acute bronchiolitis or bronchitis in children aged under 5 years, however activity was within seasonally expected levels.
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Ambulance syndromic surveillance system
During week 4, daily ambulance dispatch calls for difficulty breathing remained stable and above expected levels. Daily calls for ‘impact of heat or cold’ increased slightly on 24 January, but subsequently returned to seasonally expected levels.