Influenza vaccinations 2023-24: Cohort identification methodology

NHS England's Vaccination and Screening Directorate has commissioned the NHS England Vaccine Digital Service (VDS) to flow patient identifiable data to be used for influenza vaccine monitoring and call/recall within the 2023 to 2024 flu season that runs from 1 September 2023 to 31 March 2024.

NHS England’s Vaccination programme has commissioned NHS England’s Cohorting as a Service (CaaS) to provide patient identifiable cohorts to facilitate the identification of citizens who are eligible for influenza vaccinations for the autumn and winter 2023 to 2024 season under the Green Book chapter 19 clinical and other at risk criteria

The clinical at-risk groups within the Green Book are:

• chronic respiratory disease
• chronic heart disease and vascular disease
• chronic kidney disease
• chronic liver disease
• chronic neurological disease
• Diabetes and adrenal insufficiency
• Immunosuppression
• morbid obesity (class 3 obesity)
• Asplenia or dysfunction of the spleen
• pregnant women