Measles cases across the United States surged to 2,318 in 2026, the worst year in roughly 35 years and higher than the 2,289 cases recorded in 2025, with outbreaks spreading across 45 states and 35 new clusters. The U.S. has surpassed its 2025 totals, raising questions about its measles elimination status, which remains under review by the Pan American Health Organization, with Canada’s elimination status also in doubt after losing it last year. Experts say the rise is linked to vaccination gaps, with kindergarten vaccination rates around 92% instead of the 95% threshold, contributing to pockets ripe for transmission. The outbreaks are centered in several states including South Carolina, Texas, Arizona, Florida, Pennsylvania, Utah, and Virginia, with projections suggesting some clusters could be far larger than currently known. There have been measles-related deaths in years past, including three in 2025, underscoring the health risks for unvaccinated children and vulnerable populations. Public health officials urge renewed emphasis on vaccination and access to immunization as the primary defense against a highly contagious and preventable disease.