Canada Stripped of Measles-Free Status Amid New Outbreaks

Canada has officially lost its measles elimination status, a designation held since 1998, following a year-long resurgence of the highly contagious virus across the country. The Pan American Health Organization (PAHO) informed the Public Health Agency of Canada (PHAC) of the revocation on November 10, 2025, after sustained transmission of the same measles strain was confirmed for over 12 months. Across ten provinces and territories, 5,138 cases have been reported in 2025, highlighting an urgent public health challenge.

Alberta is among the provinces significantly affected by the outbreak, reporting 1,946 confirmed cases as of November 1, 2025. While provincial health officials indicate a positive trend, with cases down more than 90 percent from the peak and only two active cases in Alberta in recent weeks, the broader issue of declining vaccination rates remains a concern. Experts attribute the national resurgence to a combination of growing vaccine misinformation and disruptions to immunization schedules caused by the COVID-19 pandemic.

Within Calgary, vaccination rates for measles, mumps, and rubella (MMR) remain below the 95 percent threshold required for robust community immunity. Data from 2024 showed Calgary's vaccination rate for seven-year-olds at 79 percent, underscoring the local vulnerability. Alberta Health Services (AHS) continues to urge residents to ensure their vaccinations are up-to-date and offers a Measles Hotline (1-844-944-3434) for inquiries regarding immunization records or to book appointments.

Canada can regain its measles elimination status after 12 consecutive months without new transmission of the current measles strain. Officials emphasize that the measles vaccine remains the most effective protection, urging Calgary residents to stay informed and vaccinated to safeguard public health.