**As of August 6, 2026, the CDC has confirmed 2,465 measles cases nationwide for the year, already surpassing the full-year 2025 total of 2,289 and marking the highest annual count in over three decades.** Most cases (94%) are linked to 38 ongoing or new outbreaks across more than 40 jurisdictions, with 92% of patients unvaccinated or of unknown status and the largest clusters tied to sustained community transmission in states like Pennsylvania and Texas. Recent weekly increments of 50–94 cases reflect continued local spread rather than importations. CDC data releases, typically updated mid-week, provide the primary near-term signal for traders, as August 31 resolution hinges on whether the current pace of reporting sustains or decelerates amid summer travel patterns and vaccination outreach efforts. Historical precedent shows outbreaks can accelerate rapidly in under-vaccinated populations before containment measures take effect.