Week 34, 17 August to 23 August 2026
National Syndromic Surveillance Summary:
During week 34, heat-related activity across syndromic surveillance systems continued to decline following the downgrading of Heat-Health Alerts. NHS 111 calls and online assessments for heat exposure or sunburn decreased, while GP in-hours, GP out-of-hours and ambulance indicators for heat or sunstroke all returned to seasonally expected levels. Contacts for gastroenteritis, diarrhoea and vomiting increased slightly in the GP out-of-hours system and remained above baseline levels.
Of note this week:
Chart showing daily GP in-hours (combined) insect bites incidence rate per 100,000 registered patients (and 7-day moving average), England.
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