Abstract
Nationwide surveillance in Bangladesh during April 2-May 27, 2026, identified a total of 67,079 suspected and 8,834 confirmed measles cases across 8 administrative divisions. Among suspected cases, 472 deaths were reported, and 88 deaths were reported among confirmed cases. Despite high reported vaccine coverage, transmission persisted amid residual immunity gaps. Vaccine stockouts, discontinued vaccination campaigns, and coverage overestimation likely contributed to Bangladesh's largest recorded measles outbreak.