U.S. measles cases this year have surpassed 4,000, with over 25 percent of the reported infections coming from Pennsylvania, according to data released by the Centers for Disease Control and Prevention (CDC). As of October 10, 2026, there are currently 4,080 measles cases reported across 47 states and Washington, D.C.
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U.S. Measles Cases Exceed 4,000, With Pennsylvania Contributing Over 25%
As of October 10, 2026, the U.S. has reported over 4,000 measles cases this year, with Pennsylvania accounting for more than 25% of these infections. The CDC confirmed a total of 4,080 cases across 47 states and Washington, D.C.
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U.S. measles cases surpass 4,000, with over 25 percent coming from Pennsylvania
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U.S. Measles Cases Exceed 4,000, With Pennsylvania Contributing Over 25%