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4mo ago

Measles Cases Surge in North America, Reaching Highest Levels in Decades

Canada and the U.S. report over 1,680 cases in 2025, with Texas and Ontario facing the largest outbreaks and Alberta seeing a sharp rise in recent days.

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Alberta Health Services has issued new warnings about at least a dozen locations in the province where people may have been exposed to confirmed cases of measles.
An Alberta Health Services sign is pictured outside the Rockyview General Hospital in Calgary, Thursday, March 20, 2025. Health officials in Alberta are reporting 29 new cases of measles, bringing the province's total to 118 since early March. THE CANADIAN PRESS/Jeff McIntosh
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Overview

  • Canada has confirmed 880 measles cases across five provinces, with Ontario accounting for 804 cases and Alberta reporting a recent increase to 118 cases.
  • Alberta Health Services issued multiple exposure warnings for locations across the province, urging residents to ensure their vaccinations are up to date.
  • Texas has recorded 624 measles cases since January, including 64 hospitalizations and two fatalities among unvaccinated children, making it the epicenter of the U.S. outbreak.
  • The U.S. has surpassed 800 cases across 25 states, with 96% of infections occurring in unvaccinated or under-vaccinated individuals, primarily children and teens.
  • Quebec has declared its outbreak over after 32 days without new cases, concluding with 40 total infections, mostly in the Laurentians region.