International health experts announced on Monday that the country is no longer regarded as free from measles due to continuing virus spread. This development coincides with immunization levels in children decline and the highly contagious pathogen expands its reach across North and South America.
Canada has recorded 5,138 infections this year and two fatalities. The two individuals were infants who were exposed to the measles virus in the womb and delivered early.
Eradication of measles is a significant status, but it represents a major achievement against the contagious illness. A country achieves this status when it demonstrates it has stopped continuous spread of the virus within its population, though occasional cases might still occur from international travel.
The disease usually starts with a elevated temperature followed by a telltale rash that starts on the face and neck. While most people recover, it is one of the primary reasons of childhood mortality, according to international health organizations. Serious complications, including vision loss and encephalitis, are more common in young children and older adults.
“It’s a deeply disheartening development. It’s a deeply worrisome development. And, frankly, it’s an embarrassing development,” stated an infectious disease expert, a Brown University public health specialist. “No nation with Canada’s resources – or other countries in North America even – should lose their measles elimination status.”
The country eradicated measles in 1998, with the United States shortly after. After highly successful vaccination campaigns, the Western Hemisphere became the first region in the world to be declared measles-free in recent years. Health officials calculate the immunization prevented over six million fatalities in the region between 2000 and 2023.
But vaccination rates have since slipped under the 95% coverage rate needed to stop outbreaks. Large outbreaks in Venezuela and Brazil in 2018 and 2019 caused the area to lose its elimination status. It was reclaimed in this year, but is lost once more with Canada’s loss.
Experts from the regional health agency, an independent health agency, reached this conclusion after analyzing data on the Canadian situation that showed the virus has spread continuously for a year.
“As a region, we have eliminated measles twice,” Barbosa said, head of the regional health organization. “We can accomplish this once again.”
Through an announcement, national health authorities indicated they were collaborating with public and local organizations to improve vaccination coverage, exchange information and provide evidence-based guidance.