U.S. measles cases reach 4,588 this year

Published October 28, 2026

Four people standing together with their arms around one another outdoors

CDC counts cases in 47 jurisdictions as of Oct. 22, with 43 new outbreaks and three deaths so far in 2026. Nearly all cases are tied to outbreaks. Two doses of the MMR vaccine give strong, long-lasting protection, so check your family's records if you're unsure.

Source: CDC

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