Overview
- The CDC counts 1,958 U.S. cases across 49 outbreaks in 2025, the highest total in roughly 25 years with at least three deaths reported.
- South Carolina’s largest cluster has reached 144 cases centered in Spartanburg County, triggering hundreds of quarantines and disruptions at no fewer than 11 schools.
- Australia has recorded 168 measles cases in 2025, close to triple last year’s 57, with experts pointing to declining childhood coverage and infections linked to travel.
- About 92–93% of U.S. patients were unvaccinated or had unknown status, leaving communities below the ~95% protection threshold vulnerable to rapid spread.
- Georgia officials caution that holiday travel could seed new infections; the state has logged 10 cases this year and continues aggressive contact tracing, isolation and targeted vaccination.