Lambton Public Health urges continued vaccination as Canada loses measles-free designation.
Canada has officially lost its measles elimination status, according to Health Canada, marking the first time in decades that the country has fallen out of compliance with international health standards for the disease.
The Pan American Health Organization (PAHO) notified the Public Health Agency of Canada (PHAC) that Canada no longer meets the criteria for measles elimination, after the virus continued to circulate for more than 12 consecutive months. Health Canada said that while transmission has slowed in recent weeks, the national outbreak has persisted since 2024.
Since the fall of 2024, Canada has recorded more than 5,000 confirmed cases of measles across nine provinces and one territory. Canada can re-establish its measles elimination status once transmission is interrupted for at least 12 months.
In Lambton County, Lambton Public Health has reported a total of 20 measles cases since the outbreak began. No new local cases have been reported since May 19, 2025.
Lambton Public Health continues to emphasize the importance of vaccination and regular immunization record checks. The MMR (measles, mumps, rubella) vaccine remains the best form of protection against infection.
Canada first achieved measles elimination status in 1998, meaning the disease was no longer continuously transmitted within the country. The current resurgence, health officials say, highlights the need for maintaining high vaccination coverage and rapid public health response when cases arise.
