CDC reports 4,410 measles cases as outbreak grows | Reuters

US measles cases reach 4,410 in 2026, nearly double last year's total

The CDC reported 4,410 confirmed measles cases in the US as of October 15, 2026, an 8.1% week-over-week increase of 330 cases. The total far exceeds 2025's count of 2,289 cases, with Pennsylvania emerging as a major outbreak hotspot prompting the CDC to deploy a disease detective to the state.