As of early May 2026, the CDC has confirmed 1,842 measles cases nationwide, already approaching the 2,288 total recorded for all of 2025 and marking one of the highest annual figures since elimination status was achieved in 2000. Ongoing transmission is driven by multiple outbreaks linked to under-vaccinated communities and imported cases from international travelers, with 93 percent of infections tied to active clusters across 36 states. Epidemiological indicators show continued domestic spread, raising the prospect that the United States could lose its elimination designation during the CDC’s November review if case counts and outbreak duration exceed thresholds. Weekly CDC surveillance updates and state health department reports through the summer travel period will provide key data points for tracking whether incidence accelerates or begins to decline.