Canada is poised to lose its measles elimination status — and the US could, too

 https://edition.cnn.com/2025/10/27/health/measles-elimination-canada-us-who

Monday marks a full year of continuous measles transmission in Canada, a milestone that’s poised to set the country back decades on a global health commitment. Ongoing transmission in the United States puts it among a group of countries that also face scrutiny from international leaders and are at risk of a similar fate.

All of the World Health Organization’s regions have committed to eliminate measles by 2030, defined by the absence of local virus transmission for any period longer than 12 months. Canada achieved this goal in 1998, but falling vaccination rates set the stage for cases to grow into a massive — and ongoing — outbreak, putting the country and region at risk of losing elimination status.

The potential to lose elimination status “highlights the severity of the measles outbreak,” Bowdish said. “If you look at the other countries that also have circulating measles, you see that they are countries without strong public health like Canada and they are countries that have been torn apart by war or civil unrest. It is an eye-opener about how you need to have constant vigilance and consistent support for public health in order to fight infectious disease.”

And Canada isn’t the only country posing a risk to the region. Six others — including the US and Mexico — have active measles transmission situations that will be discussed at the PAHO commission meeting. President Donald Trump issued an executive order in January to withdraw the US from WHO, but PAHO says that it expects US officials – both from the CDC and the National Sustainability Commission – to attend the commission meeting on measles elimination next month.

But measles counts continue to grow in the US, and ongoing outbreaks in multiple states — including one on the border of Arizona and Utah and one in South Carolina — are being investigated for possible connections to the Texas outbreak. If links are confirmed and cases continue to spread into January, the US will have also lost its claim to the measles elimination status that it earned in 2000.