Canada's Measles Outbreak Subsides

A multijurisdictional measles outbreak has occurred in Canada, beginning in New Brunswick in October 2024. This year, it has spread in Ontario (1,949), and related cases have been reported in Alberta, British Columbia, Manitoba, the Northwest Territories, Nova Scotia, Prince Edward Island, Quebec, and Saskatchewan.

Canada Health's Measles and Rubella Weekly Monitoring Report states that, of the 2,755 measles cases (2,429 confirmed, 326 probable) reported in 2025, 1,867 cases are linked to this outbreak as of June 2, 2025.

At the end of May 2025, only 244 new measles cases were reported in one week, indicating a continued decline of this outbreak.

The government says, 'If you're infected with the measles virus, you can spread it to others. This is possible from 4 days before the onset of the rash to 4 days after the rash begins. Isolate at home and call a health care provider immediately. They will advise you on what to do.'

As of June 8, 2025, measles vaccination services are offered throughout Canada.