Syndromic surveillance summary: 17 May 2026 week 20
Updated 21 May 2026
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Reporting week 20: 11 to 17 May 2026
During week 20, there were slight increases in gastroenteritis indicators in the GP in-hours and emergency department systems, though similar indicators remained stable in other systems.
Remote health advice syndromic surveillance system
During week 20, NHS 111 triaged calls and online assessments for diarrhoea and vomiting were stable but remained above seasonally expected levels.
Please note: Due to technical issues at the time of the production of this report, data for NHS111 online was only available up to 14 May. We are working to resolve this issue.
Access the remote health advice syndromic surveillance bulletins
GP in-hours syndromic surveillance system
During week 20, consultation rates for upper respiratory tract infections increased slightly, though other indicators of acute respiratory infections were decreasing or stable. Consultation rates for gastroenteritis increased slightly, though diarrhoea and vomiting consultation rates remained stable.
Access the GP in-hours syndromic surveillance bulletins
GP out-of-hours syndromic surveillance system
During week 20, GP out-of-hours daily contacts for gastroenteritis and vomiting were stable however, there was a decrease in contacts for diarrhoea.
Access the GP out-of-hours syndromic surveillance bulletins
Emergency department syndromic surveillance system
During week 20, ED attendances for gastroenteritis increased slightly, in line with the seasonal expectation. Attendances for acute respiratory infections remained stable.
Access the emergency department syndromic surveillance bulletins
Ambulance syndromic surveillance system
During week 20, all syndromic indicators were stable or decreasing.