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Canada’s Measles Cases Surge Past U.S. Total as National Outbreak Deepens

Sub-95% MMR uptake is fueling sustained outbreaks that threaten Canada’s measles-free status.

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A dose of the measles, mumps, and rubella (MMR) vaccination awaits the next patient during a vaccine clinic at Southwestern Public Health in St. Thomas, Ont., on Tuesday, March 4, 2025.THE CANADIAN PRESS/ Geoff Robins
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Overview

  • By mid-July, Canada had 3,822 measles cases nationwide, with Alberta’s 1,314 infections surpassing the U.S. total of 1,288.
  • New Brunswick declared a south-central outbreak after confirming three measles cases and identifying five more as probable.
  • Manitoba recorded 130 confirmed cases, the highest since measles elimination in 1998, raising concerns over low childhood immunization rates.
  • The United States logged its worst measles outbreak in 33 years with 1,288 cases across 39 states, resulting in three deaths and more than 160 hospitalizations.
  • The United Kingdom reported its first confirmed case on the Wirral after a child’s death in Liverpool and is seeing rising hospital admissions as vaccination rates fall below herd-immunity thresholds.