Sustained community transmission fueled by pockets of low MMR vaccination coverage continues to drive elevated measles incidence across multiple states in 2026. As of early May, CDC data show 1,842 confirmed cases—already approaching the full-year 2025 total of 2,288—with 93% linked to 25 ongoing or recently concluded outbreaks, primarily in South Carolina, Utah, Texas, and Florida. Most cases involve unvaccinated children and adolescents, consistent with historical patterns where importations from international travel seed local spread in under-immunized groups. Weekly CDC surveillance updates and potential summer-travel-related importations remain the key near-term catalysts that could accelerate or slow the final tally before year-end resolution.