1. Department of Health and Social Care. JCVI statement on the routine annual influenza vaccination programme - extension of the programme to children. https://www.gov.uk/government/publications/jcvi-statement-on-the-routine-annual-influenza-vaccination-programme2013.
2. Department of Health & Social Care. National flu immunisation programme 2021 to 2022 letter. https://webarchive.nationalarchives.gov.uk/ukgwa/20220412180617/https://www.gov.uk/government/publications/national-flu-immunisation-programme-plan/national-flu-immunisation-programme-2021-to-2022-letter2021.
3. Influenza Vaccine Effectiveness: Defining the H3N2 Problem;Belongia;Clin Infect Dis,2019
4. Influenza imprinting in childhood and the influence on vaccine response later in life;Kelvin;Eurosurveillance,2019