US Measles Cases Exceed 4,400 in 2026, a 93 Percent Increase From Last Year

The United States has recorded 4,410 confirmed measles cases as of October 15, 2026, a significant increase that has prompted public health concerns. This figure represents a 93% rise compared to the total cases reported in 2025. Pennsylvania is currently experiencing the largest outbreak, with 1,222 cases and five measles-associated deaths. New York Governor Kathy Hochul declared a statewide disaster emergency on October 5, 2026, in response to the escalating situation.

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