The Latest Breaking News from Measles

With 45 outbreaks of measles over the past year, the United States is at risk of endemic spread within months, experts told Live Science.

Canada has lost its measles elimination status and the U.S. is likely to be next. These failures are the result of the anti-vaccination movement, bolstered by the appointment of Robert F. Kennedy Jr. — and it's a bellwether of the erosion of public health.

The outbreak has already led to the deaths of two babies

A large, ongoing outbreak that began in Canada in 2024 has cost the country its measles elimination status.

International health experts say Canada is no longer measles-free because of ongoing outbreaks, as childhood vaccination rates fall and the highly contagious virus spreads across North and South America

Canada was first declared measles-free in 1998.

In the wake of a measles outbreak in Canada that has infected thousands of people over the past year, an international health agency revoked the country’s measles-free status on Nov. 10, 2025.

More than 1,600 cases and three deaths due to measles infections so far this year – mostly in unvaccinated Americans

When four states between 2015 and 2021 stopped allowing parents to opt their children out of receiving routine vaccines without a medical reason, vaccination rates among kindergartners increased substantially. That’s the key finding from our new study published in the medical journal JAMA Pediatrics.

Epidemiologist Dr. Seth Berkley spoke to Live Science about the importance of vaccine equity and the obstacles undermining it, as well as the political challenges to vaccines being raised in the U.S.

The recent confirmation of new measles cases unconnected to international travel suggests the highly contagious disease has likely started spreading through communities, according to Health New Zealand.