The UK Heath Security Agency's Immunisation Against Infectious Disease collection – popularly known as the 'Green Book' – contains chapters on vaccine preventable infectious diseases in the UK.

These chapters are updated as necessary to reflect the current policies and procedures as advised by the Joint Committee on Vaccination and Immunisation (JCVI).

View the chapters relating to the winter programme:

• Influenza: the green book, chapter 19
• COVID-19: the green book, chapter 14a