As of July 2026, the United States has reported more measles cases than in the entirety of 2025, marking the highest number of cases since 1991. Major outbreaks have been reported in South Carolina, Utah, and Arizona, affecting hundreds of individuals, with additional clusters emerging in other states.
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U.S. Reports Significant Increase in Measles Cases in 2026
In 2026, the U.S. has experienced a significant rise in measles cases, surpassing the total for all of 2025. Major outbreaks have occurred in South Carolina, Utah, and Arizona, with hundreds affected and smaller clusters reported in other states.
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There are already more U.S. measles cases this year than in all of 2025
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U.S. Reports Significant Increase in Measles Cases in 2026