Syndromic surveillance summary: 20 March 2025 week 11
Updated 27 March 2025
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Reporting week 10 March to 16 March
During week 11, most acute respiratory infection syndromic indicators continued to decrease nationally however there were small increases observed in children across selected syndromic systems. Gastroenteritis indicators (including diarrhoea and vomiting) were largely stable overall, however activity remained above levels expected for the time of year. GP in-hours consultations for chickenpox increased in line with seasonally expected activity.
Remote health advice syndromic surveillance system
NHS 111 triaged calls and online assessments for acute respiratory infections remained below baseline levels during week 11. NHS 111 triaged calls and online assessments for diarrhoea remained stable overall but at levels above those expected for the time of year. There was an increase in diarrhoea and vomiting triaged calls noted in the 1 to 4 years age group.
Please note: due to a technical issue there was limited data availability for NHS 111 triaged calls from Saturday 1 to Monday 3 March 2025, with very low call counts on Sunday 2 March. Data and trends for week 10 should therefore be interpreted with caution.
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GP in-hours syndromic surveillance system
During week 11, GP in-hours consultation rates for upper respiratory tract infections were stable overall, however there was an increase in consultations observed in children aged under 15 years. There was also a small increase in lower respiratory tract infections in children aged 1 to 4 and 5 to 14 years. Gastroenteritis, diarrhoea and vomiting indicators were stable but remained above expected levels. Consultations for chickenpox increased during week 11 in line with seasonally expected levels.
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GP out-of-hours syndromic surveillance system
During week 11, GP out-of-hours contacts for acute respiratory infections continued to decrease overall, however there was a small increase observed in children aged 1 to 4 years. Contacts for diarrhoea, gastroenteritis and vomiting remained stable but above levels expected for the time of year.
Access the GP out-of-hours syndromic surveillance bulletins
Emergency department syndromic surveillance system
During week 11, ED attendances for acute respiratory infections and influenza-like illness continued to decrease overall. There was an increase in asthma attendances, particularly in the 1 to 4 and 5 to 14 years age groups, but overall activity remained below levels expected for the time of year. Gastroenteritis attendances were stable during week 11 however activity in the 1 to 4 years age group remained elevated, but stable.
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Ambulance syndromic surveillance system
During week 11, ambulance calls for difficulty breathing remained stable and at seasonally expected levels. ‘Cardiac or respiratory arrest’ calls decreased and were below expected levels.