1. Joint Committee on Vaccination and Immunisation (JCVI) statement on COVID-19 vaccinations in 2022: 21 February 2022. Available at: 〈https://www.gov.uk/government/publications/joint-committee-on-vaccination-and-immunisation-statement-on-covid-19-vaccinations-in-2022/joint-committee-on-vaccination-and-immunisation-jcvi-statement-on-covid-19-vaccinations-in-2022-21-february-2022〉 [Accessed 20th June 2024].
2. JCVI statement on spring 2023 COVID-19 vaccinations, 22 February 2023. Available at: 〈https://www.gov.uk/government/publications/spring-2023-covid-19-vaccination-programme-jcvi-advice-22-february-2023/jcvi-statement-on-spring-2023-covid-19-vaccinations-22-february-2023〉 [Accessed 20th June 2024].
3. Weekly national Influenza and COVID-19 surveillance report Week 36 report. Available at: 〈https://assets.publishing.service.gov.uk/media/6319c191d3bf7f77cfa8dd35/Weekly_Flu_and_COVID-19_report_w36.pdf〉 [Accessed 20th June 2024].
4. National Influenza and COVID-19 surveillance report Week 27 report. Available at 〈https://assets.publishing.service.gov.uk/media/64a694f24dd8b3000c7fa57b/Weekly_Flu_and_COVID-19_report_w27.pdf〉 [Accessed 20th June 2024].
5. The use of quasi-experimental designs for vaccine evaluation;Lopez Bernal;Clin Infect Dis,2019