(CNN) — Canada has lost its measles elimination status amid a large ongoing outbreak of the virus, the Public Health Agency of Canada said Monday.

Canada’s health agency was informed by the Pan American Health Organization, part of the World Health Organization, that it had lost its measles elimination status as viral transmission has continued uninterrupted since October 2024.

Although it has slowed recently, according to the Canadian government, the outbreak is still ongoing, primarily within undervaccinated communities.

“PAHO’s Measles and Rubella Elimination Regional Monitoring and Re-Verification Commission reviewed recent epidemiological and laboratory data, confirming sustained transmission of the same measles virus strain in Canada for a period of more than one year,” officials

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