Measles
FILE - Health department staff members enter the Andrews County Health Department measles clinic carrying doses of the measles, mumps and rubella vaccine, April 8, 2025, in Andrews, Texas.
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The U.S. has surpassed 2025’s record for measles cases, with five months left in 2026. The U.S. Centers for Disease Control and Prevention said Friday it has logged more than 2,300 cases of measles as of Thursday. Major outbreaks in South Carolina, Utah, and Arizona have contributed to the rise. Experts say the actual spread might be greater due to underreporting and declining vaccination rates. For example, experts relying on mathematical modeling and genetic analyses believe a large outbreak on the Utah-Arizona border could be around three to four times bigger than the official count.
The nation had 2,289 cases in 2025, the worst year for measles in more than three decades.
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