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Measles Outbreaks Escalate Across North America and the UK

Public health responses intensify as cases surpass 4,000 globally, with fatalities reported in the U.S., Mexico, and Canada.

Overview

  • The United States has confirmed 1,046 measles cases across 30 states in 2025, including three deaths among unvaccinated individuals.
  • Canada has recorded over 2,000 cases this year, with Ontario and Alberta as hotspots; Alberta has issued a standing exposure advisory for its South Zone.
  • Mexico reports over 1,000 cases, with four fatalities, primarily in border regions; local outreach to vaccine-hesitant communities is underway.
  • The UK’s Salford region has confirmed local transmission, prompting officials to urge residents to verify their MMR vaccination status.
  • Falling vaccination rates and misinformation have weakened herd immunity, leaving infants, immunocompromised individuals, and unvaccinated adults at heightened risk.