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14h ago

Texas Measles Outbreak Expands to Dallas-Fort Worth, Reaches 717 Cases

The largest U.S. measles outbreak in over two decades has spread to Collin and Rockwall counties, with 805 cases reported across three states and two child fatalities in Texas.

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Overview

  • The Texas Department of State Health Services confirmed 717 measles cases linked to the outbreak, with eight new cases reported on May 13, 2025.
  • The outbreak, originating in Gaines County, has now spread to Collin and Rockwall counties in the Dallas-Fort Worth area, marking its first linked cases in the region.
  • Across Texas, New Mexico, and Oklahoma, the outbreak totals 805 cases, with fewer than 1% of cases currently infectious, according to health officials.
  • The outbreak has resulted in 93 hospitalizations and two child deaths in Texas; both children were unvaccinated and had no underlying health conditions.
  • Nearly 96% of cases involve unvaccinated individuals or those with unknown vaccination status, underscoring the critical role of the MMR vaccine in preventing measles.