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Measles Cases Reach 800 in U.S., Threatening Elimination Status

The outbreak, centered in Texas with 597 cases, highlights falling vaccination rates and resource challenges as Ontario reports 925 cases.

Health department staff members enter the Andrews County Health Department measles clinic carrying doses of the measles, mumps and rubella vaccine, Tuesday, April 8, 2025, in Andrews, Texas. 
A sign outside Southwestern Public Health in St. Thomas, Ont. on Tuesday, March 4, 2025 warns residents to call ahead before visiting a doctor or hospital if they think they have the measles. THE CANADIAN PRESS/ Geoff Robins
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A sign reading "measles testing" is seen as an outbreak in Gaines County, Texas, has raised concerns over its spread to other parts of the state, in Seminole, Texas, U.S., February 25, 2025. REUTERS/Sebastian Rocandio/File Photo

Overview

  • The U.S. has confirmed 800 measles cases across 24 states in 2025, with Texas accounting for 597 cases, according to the CDC.
  • Ontario's outbreak has grown to 925 cases since October, with 69 hospitalizations reported, including unvaccinated children.
  • Ninety-six percent of U.S. measles cases involve unvaccinated individuals or those with unknown vaccination status, underscoring declining MMR uptake.
  • CDC officials warn of underreporting, particularly in West Texas, and cite strained outbreak response due to recent public health funding cuts.
  • Michigan has reported its first measles outbreak since 2019, with seven confirmed cases linked to Ontario's larger outbreak.