Part of Influenza vaccinations 2023-24: Cohort identification methodology
Rule logic
The table below displays the cohorts of clinical conditions that have been identified for call and recall for the flu season from 2022 to 2023. These conditions are detailed in Chapter 19 of the Green Book.
Currently GPES data is being pulled from GPES v5.
Chronic respiratory disease
| Description | Data used | Rulesets |
|---|---|---|
| Asthma that requires continuous or repeated use of inhaled steroids or systemic steroids. | GPES v5 | All people over 6 months of age on asthma treatment (inhaled steroids) in the previous 12 months. |
| Asthma with previous exacerbations requiring hospital admission. | GPES v5 | All people over 6 months of age with an emergency admission due to asthma between 1 September 2023 to 31 March 2024. |
| Chronic obstructive pulmonary disease (COPD) including chronic bronchitis and emphysema; bronchiectasis, cystic fibrosis, interstitial lung fibrosis, pneumoconiosis and bronchopulmonary dysplasia (BPD). | GPES v5 | All people over 6 months of age with a diagnosis of chronic obstructive pulmonary disease (COPD) including chronic bronchitis and emphysema; bronchiectasis, cystic fibrosis, interstitial lung fibrosis, pneumoconiosis and bronchopulmonary dysplasia (BPD). |
| Children who have previously been admitted to hospital for lower respiratory tract disease. | GPES v5 | All children under 17 years on 1 September 2023 and over 6 months of age who have previously been admitted to hospital for a lower respiratory tract disease. |
Chronic heart disease
| Description | Data used | Rulesets |
|---|---|---|
| Congenital heart disease, hypertension with cardiac complications, chronic heart failure, individuals requiring regular medication and/or follow-up for ischaemic heart disease. | GPES v5 | All people over 6 months of age with a diagnosis of congenital heart disease, hypertension with cardiac complications, chronic heart failure or ischaemic heart disease (regardless of medication/ hospital follow up). |
Chronic liver disease
| Description | Data used | Rulesets |
|---|---|---|
| Cirrhosis, biliary atresia, chronic hepatitis. | GPES v4 and GDPPR | All people over 6 months of age with a diagnosis of cirrhosis, biliary atresia, chronic hepatitis. |
Chronic neurological disease
| Description | Data used | Rulesets |
|---|---|---|
| Conditions in which respiratory function may be compromised due to neurological disease (e.g. polio syndrome sufferers). | GPES v5 | All people over 6 months of age diagnosed with a neurological condition where respiratory compromise is often severe and occult, such as Motor Neuron Disease, Parkinson’s Disease and Huntington’s Chorea. |
| Stroke, transient ischaemic attack (TIA). | All people over 6 months of age diagnosed with stroke or transient ischaemic attack (TIA). |
Diabetes and adrenal insufficiency
| Description | Data used | Rulesets |
|---|---|---|
| Type 1 diabetes, type 2 diabetes requiring insulin or oral hypoglycaemic drugs, diet controlled diabetes. Addison’s disease, secondary or tertiary adrenal insufficiency requiring steroid replacement. | GPES v5 | All people over 6 months of age diagnosed with type 1 or type 2 diabetes. |
Immunosuppression
| Description | Data used | Rulesets |
|---|---|---|
|
Immunosuppression due to disease leading to immunosuppression, bone marrow transplant, HIV infection at all stages, multiple myeloma or genetic disorders affecting the immune system (e.g. IRAK-4, NEMO, complement disorder).
|
GPES v5 |
All people over 6 months of age prescribed immunosuppressants by their GP (apart from oral steroids) and some people over 6 months of age on chemotherapy within the last 12 months. |
| Immunosuppression due to treatment leading to immunosuppression, including patients undergoing chemotherapy and individuals treated with or likely to be treated with systemic steroids for more than a month at a dose equivalent to prednisolone at 20mg or more per day (any age), or for children under 20kg, a dose of 1mg or more per kg per day. | GPES v5 | All people over 6 months of age prescribed immunosuppressants by their GP (apart from oral steroids) and some people over 6 months of age on chemotherapy within the last 12 months. |
| Asplenia or disfunction of the spleen. This also includes conditions such as homozygous sickle cell disease, hereditary spherocytosis, thalassemia major and coeliac syndrome that may lead to splenic dysfunction. | All people with a splenectomy or splenic damage, sickle cell anaemia, thalasaemia, spherocytosis, coeliac syndrome and some other diseases that cause asplenia or splenic dysfunction. |
Morbid obesity (class III obesity)
| Description | Data used | Rulesets |
|---|---|---|
| Adults with a Body Mass Index ≥40 kg/m² | GPES v4 and GDPPR | All people over 16 years with a BMI equal to or over 40 at any time between 1 September 2022 to 31 March 2023. If there is no BMI within this time frame, anyone over 16 years whose last recorded BMI within the last 3 years was equal to or over 40. |
Clinically coded eligibility
| Description | Data used | Rulesets |
|---|---|---|
| GP added code to indicate vaccination eligibility for flu. | GPES v5 | All people over 6 months with the SNOMED CT code 185903001 needs influenza immunization (finding) added to their GP record between 1 September 2023 to 31 March 2024. Or all people over 6 months of age with the SNOMED CT code 935351000000106 Long term indication for seasonal influenza vaccination (situation) added to their GP record at any time. |
Age based cohorts
| Description | Data used | Rulesets |
|---|---|---|
| All children in England between 2 and 3 years old | PDS | All children aged 2 to 3 years old on the 31 August 2023 |
| All children in England between 4 and 16 years old | PDS | All children aged 4 to 16 years old on the 31 August 2023 |
| All citizens in England aged 65 years or over | PDS | All people age 65 years or over on 31 March 2024 |
Last edited: 20 September 2023 1:41 pm