Measles Outbreak that Contributed to Canada Losing Elimination Status Highlights Risks From Persistent Immunity Gaps

Lessons Learned from Canadian Measles Outbreak

Understanding the cause of the outbreak on a population level can help with public health response to prevent further outbreaks in Canada and around the globe.

Canada's measles outbreak exposes vulnerabilities in disease elimination efforts

The outbreak that contributed to Canada losing its measles elimination status in November 2025 was concentrated in historically under-vaccinated communities with close social networks across Canada, the US, Mexico, and beyond, creating opportunities for cross-border transmission, concludes a study published by The BMJ today.

Measles outbreak that contributed to Canada losing elimination status highlights risks from persistent immunity gaps

The outbreak that contributed to Canada losing its measles elimination status in November 2025 was concentrated in historically undervaccinated communities with close social networks across Canada, the U.S., Mexico and beyond, creating opportunities for cross-border transmission, concludes a study published by The BMJ.