The CDC's 2026 count lists one measles-related death in the US, based on a death reported by a state, HHS said. The figure may change as more information arrives and reviews are completed; CDC data showed 3,471 measles cases as of Sept. 17.
Pennsylvania reported four measles-associated deaths in 2026 so far, according to its health department. The CDC did not confirm whether the death in its count was among those cases.
The CDC said it is working with the Council of State and Territorial Epidemiologists to develop a standardized definition for measles deaths, aiming to make classification and reporting consistent across jurisdictions.
