Lessons for Immunisation Policy and Practice From the Deadly Measles Resurgence in Bangladesh.

Bangladesh is experiencing one of the deadliest outbreaks of measles in 2026, with at least 472 suspected child deaths and over 67,079 suspected cases as of 27 May 2026. It has happened primarily following a fall in measles vaccination coverage in 2025, largely due to the cancellation of a planned 2024 Measles-Rubella vaccination Campaign and major political unrest. This editorial, based on available surveillance data, disease transmission modelling and lower vaccination coverage, argues that the 2026 measles outbreak was predictable, preventable and needed prompt action and management. We urge attention to addressing the issues related to structural and programmatic barriers, political and financial gaps in the planning, challenges related to Supplementary Immunisation Activity (SIA) scheduling and recommended-to protect vulnerable high-risk communities.