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Alberta Measles Cases Surge to 365, Outpacing All Other Western Provinces Combined

With nearly two-thirds of cases in the south zone and most linked to unvaccinated individuals, Alberta intensifies vaccination efforts to contain the outbreak.

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There were 365 confirmed cases of measles in Alberta as of noon on Monday, with nearly two-thirds of cases in the south health zone.
Pharmacy Manager Heba (Heather) Elbayoumi from Heathers Pharmacy and Travel Clinic in Kensington with the meal vaccines in Calgary on Friday, April 4, 2025.
As of May 13, 2025, there are 374 measles cases in total in Alberta, bringing the province's case count to the second-highest in the country.

Overview

  • Alberta has confirmed 365 measles cases as of May 12, 2025, the second-highest count in Canada, with cases rising by 39 over the weekend.
  • The south health zone accounts for nearly two-thirds of cases, with localized hotspots like Two Hills County showing vaccination rates as low as 24%.
  • The outbreak is driven by suboptimal vaccination coverage, with only 71.6% of seven-year-olds in Alberta fully vaccinated, far below the 95% threshold for herd immunity.
  • The majority of cases—229 out of 365—are in unvaccinated individuals, with 19 people hospitalized, including three in intensive care.
  • The provincial government has launched expanded immunization access and a public awareness campaign, but experts warn immunity buildup will take time to curb the outbreak.