Measles cases in the United States have surpassed 1,500 in 2026, with Utah, Texas, and Florida among the most affected states. The increase is largely associated with declining vaccination coverage, with 92% of cases occurring among individuals who are unvaccinated or have unknown vaccination status. Although measles was declared eliminated in the United States in 2000, current trends indicate that this status may be at risk. Currently, only 10 states maintain the 95% MMR vaccination coverage required to sustain herd immunity. Read more here.