**Ongoing measles transmission in the United States, driven by multiple active outbreaks, continues to shape trader views on cumulative confirmed cases through June 30.** As of June 11, 2026, the CDC reported 2,073 confirmed cases for the year, with 93% outbreak-associated across 40 jurisdictions and 30 new outbreaks identified in 2026 alone. Most cases involve unvaccinated or unknown-status individuals, primarily children and young adults, mirroring patterns from the record 2,288 cases in 2025. Recent weekly additions have averaged roughly 40–50 cases, reflecting a slowdown from earlier peaks but sustained community spread from lingering 2025 outbreaks such as the large South Carolina event. CDC surveillance updates, expected around mid-June, and any new travel-related importations ahead of summer could incrementally raise totals before resolution. Historical precedent shows measles can accelerate rapidly in under-vaccinated clusters, though current trends suggest modest near-term growth.