[UPDATE] US measles cases reach 4,410 this year, nearly double last year's 2,289
The CDC counts 4,410 measles cases in 2026, per ABC News. About 96% are among people who are unvaccinated or whose status is unknown. Pennsylvania alone reports 6 measles-related deaths.
PREVIOUSLY
Oct. 16 — With Pennsylvania's case count at 1,222, the CDC sent an outbreak investigator to the state.