Syndromic surveillance summary: 29 August 2026 week 35
Updated 10 September 2026
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Reporting week 35: 24 to 30 August 2026
During week 35, patient contacts for gastrointestinal syndromic indicators were stable or decreasing but remained above baseline level in several systems. Small increases in ‘asthma’ and ‘difficulty breathing’ type indicators were seen in the emergency department (ED) and GP out-of-hours, in line with seasonal expectations.
Remote health advice syndromic surveillance system
During week 35, NHS 111 triaged calls and online assessments for diarrhoea remained above seasonally-expected levels. Total NHS 111 triaged calls and online assessments increased during the public holiday weekend (Saturday 29 to Monday 31 August), as would usually be expected.
Access the remote health advice syndromic surveillance bulletins
GP in-hours syndromic surveillance system
During week 35, GP in-hours consultation rates for gastroenteritis and diarrhoea were stable, while consultations for vomiting decreased; all remained above seasonally-expected levels.
Access the GP in-hours syndromic surveillance bulletins
GP out-of-hours syndromic surveillance system
During week 35, daily ‘difficulty breathing or wheeze or asthma’ contacts increased, in line with the seasonal expectation. Daily total GP out-of-hours contacts increased over public holiday weekend (Saturday 29 to Monday 31 August), as would usually be expected.
Note: there was a sharp increase in the number of daily contacts for influenza-like illness recorded on Friday 28 August. These 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).
Access the GP out-of-hours syndromic surveillance bulletins
Emergency department syndromic surveillance system
ED attendances for asthma increased slightly, as expected at the time of year. Attendances for gastroenteritis decreased, though remain similar to the baseline.
Note: we are investigating an apparent reduction in the total number of attendances identified in a small number of EDs during weeks 34 and 35.
Access the emergency department syndromic surveillance bulletins
Ambulance syndromic surveillance system
During week 35, daily number of ambulance calls for ‘impact of heat or cold’ was stable and at the level expected for the time of year.