Canada's measles elimination status has been officially revoked after health authorities confirmed sustained domestic transmission of the virus for over 12 months, marking a significant setback in public health achievements. The Pan American Health Organization (PAHO) notified Canadian officials of the status change on Monday, citing a multi-region outbreak that began in October 2024.
Outbreak at a Glance
Government data reveals 5,138 measles cases reported nationwide as of October 25, 2025, including two fatalities among premature infants with congenital infections. While transmission rates have recently slowed, under-vaccinated communities remain particularly vulnerable to ongoing spread.
Historical Context and Recovery Path
Canada first achieved measles elimination in 1998 through rigorous vaccination programs. Health officials emphasize that elimination status can be regained if no new cases linked to the current strain emerge for 12 consecutive months.
Measles – a highly contagious viral illness spread through respiratory droplets – causes fever, cough, and distinctive rashes. Severe cases may lead to pneumonia, particularly in unvaccinated populations. The Public Health Agency of Canada continues urging vaccination as the most effective preventive measure.
