Recent CDC surveillance data through May 7, 2026, confirm 1,842 measles cases nationwide this year, with 93 percent tied to ongoing or carryover outbreaks across 37 jurisdictions and 25 new clusters reported since January. Transmission remains concentrated in under-vaccinated populations, where the virus spreads rapidly via airborne droplets, yet weekly increments have slowed to single digits in several states as the largest outbreaks, including South Carolina’s record surge, resolve. With only two weeks remaining until the May 31 resolution threshold, CDC’s next weekly update and any new laboratory-confirmed reports from high-burden states such as Utah and Texas will determine the final tally. Historical patterns show summer travel can seed additional importations, but current epidemiological trends indicate limited further acceleration before the cutoff.