Syndromic surveillance summary: 3 May 2026 week 18
Updated 14 May 2026
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Reporting week 18: 27 April 2026 to 3 May 2026
During week 18, there were some small increases in indicators of gastroenteritis, while acute respiratory infection indicators largely stabilised across all systems. GP in hours consultations for allergic rhinitis increased further and are now above seasonally expected levels.
Remote health advice syndromic surveillance system
During week 18, NHS 111 triaged calls and online assessments in total, and for individual indicators, increased over the May bank holiday weekend (Saturday 2 May to Monday 4 May), in line with the expected increase in activity during a public holiday. Activity and trends during this period should therefore be interpreted with caution.
Access the remote health advice syndromic surveillance bulletins
GP in-hours syndromic surveillance system
During week 18, GP in-hours consultation rates for acute respiratory infection indicators decreased slightly or remained stable. Consultation rates for gastroenteritis and diarrhoea remained stable, but consultation rates for vomiting showed a further increase. Allergic rhinitis consultation rates continued to increase and are now above seasonally expected levels.
Access the GP in-hours syndromic surveillance bulletins
GP out-of-hours syndromic surveillance system
During week 18, GP out-of-hours daily contacts for acute respiratory infection and fever increased slightly, with activity below seasonally expected levels. Gastroenteritis and diarrhoea contacts increased slightly and continue to remain above expected levels.
Access the GP out-of-hours syndromic surveillance bulletins
Emergency department syndromic surveillance system
During week 18, ED attendances for gastroenteritis increased, in line with seasonal expectations, particularly in the 1 to 4 and 5 to 14 years age groups. ED attendances for acute respiratory infections remained stable, and below seasonally expected levels.
Access the emergency department syndromic surveillance bulletins
Ambulance syndromic surveillance system
During week 18, daily numbers of ambulance calls for difficulty breathing increased slightly but remain at seasonally expected levels. Calls for chest pain also increased slightly and remain above baseline.