Overview

• Canada, which eradicated measles in 1998, has confirmed 3,500 cases in 2025, surpassing the United States and other Western nations.
• Outbreak hotspots in Ontario and Alberta stem largely from unvaccinated Anabaptist communities and newly arrived immigrants without access to family doctors.
• Some rural areas report two-dose immunization rates below 50 percent, far short of the 95 percent threshold needed to prevent sustained transmission.
• Health authorities have expanded vaccination clinics and outreach campaigns to engage resistant groups and enlist religious leaders in promoting immunization.
• Efforts to contain the epidemic are hampered by widespread vaccine misinformation and shortages of primary care providers.