Research and analysis

Syndromic surveillance summary: 17 April 2025 week 15

Updated 24 April 2025

Reporting week 15: 7 April 13 April 2025

During week 15 there was a further increase in the GP in-hours consultation rate for allergic rhinitis, with activity currently above seasonally expected levels. Respiratory indicators in general decreased in line with seasonally expected trends and were at seasonally expected levels. Emergency department (ED) attendances for gastroenteritis increased in the 1 to 4 and 5 to 14 years age groups.

Remote health advice syndromic surveillance system

During week 15, NHS 111 triaged calls and online assessments for acute respiratory infections decreased in line with seasonal expectations. Triaged calls and online assessments for diarrhoea remained stable overall, while vomiting decreased.

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GP in-hours syndromic surveillance system

During week 15, GP in-hours consultation rates for respiratory conditions including upper respiratory tract infections and influenza-like illness continued to decrease and remained in line with expected seasonal trends and levels. There was a further increase in the consultation rate for allergic rhinitis; activity remained above seasonally expected levels and was particularly noted in adults aged 45 years and over and in the East of England, London, South East and South West regions.

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GP out-of-hours syndromic surveillance system

During week 15, GP out-of-hours contacts for acute respiratory infections continued to decrease, line with seasonally expected levels. Decreases were particularly observed in those aged 1 to 4, 5 to 14 and 15 to 44 years. There was an increase in contacts for difficulty breathing, wheeze or asthma in the 15 to 44 years age group.

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Emergency department syndromic surveillance system

During week 15, ED attendances for acute respiratory infections continued to decrease in line with seasonally expected trends and particularly in age groups between 1 and 44 years. Influenza-like illness attendances also decreased and, while they remained above expected levels, approached the seasonal baseline. Attendances for gastroenteritis increased during week 15 and remained above expected levels, particularly in the 1 to 4 and 5 to 14 years age groups.

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Ambulance syndromic surveillance system

During week 15, difficulty breathing ambulance calls remained stable and in line with expected levels. There was a small increase in calls for ‘collapsed with unknown problem’.

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