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Measles Resurgence Hits 37 States With Clusters in Kentucky, Wyoming and Utah

Low MMR coverage coupled with importations has fueled new clusters, prompting authorities to step up contact tracing alongside expanded immunization campaigns.

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Measles has reached Bexar County in the first confirmed case here since the beginning of the West Texas outbreak.
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Overview

  • The U.S. outbreak has topped 1,200 confirmed cases across 37 states, marking the largest resurgence since measles was declared eliminated in 2000.
  • Kentucky has logged five linked infections in Woodford and Fayette counties plus an unrelated importation in Todd County, and none of the patients were vaccinated.
  • Wyoming confirmed its first measles case in 15 years in an unvaccinated child, and Utah’s health department reports nine infections—all among unvaccinated residents concentrated in Utah County.
  • Texas has recorded 753 cases since January, with 710 among unvaccinated individuals, and Bexar County reported its first isolated case this year.
  • Health officials are intensifying exposure notifications and expanding MMR vaccination clinics to bolster herd immunity and contain community spread.