The national influenza vaccination programme of the United Kingdom is highly successful, changeable and progressive and can feel relentless in its delivery. When the national flu immunisation programme plan for 2024 to 2025 (as known as ‘the annual letter’) was published on 12th March 2024, initially it seemed that this year would have very few changes to the programme, when compared to those of the last few years (UK Health Security Agency [UKHSA], 2024). However, since then there have been two versions of a statement of amendment, the second due to loss of a valuable vaccine type (UKHSA, 2024), and a pertinent letter from NHS England concerning the start dates for the programme (NHS England, 2024). These changes should not be a surprise to any immuniser, especially those who have been involved in the flu vaccination programmes in previous years. Changes often happen in the lead up to, and even after, the start of the
programme. Our national immunisation programmes (NIPs) are never static for long. They are changeable due to such things as changing epidemiology, differing vaccine types or supply, new evidence, national advice or recommendations being implemented and shared with the field regularly.