Health · Public Health & Disease · 1 hr ago

U.S. Measles Elimination Status Under Review as Cases Rise

U.S. Measles Elimination Status Under Review as Cases Rise

An international panel is reviewing whether the U.S. still qualifies as having eliminated measles.

The Pan American Health Organization’s experts are meeting from November 10 to 13 to assess measles and rubella across the Americas.

The U.S. was declared to have eliminated measles in 2000, meaning the virus had not spread continuously within the country for a year, though imported cases could occur.

Genetic data and successive outbreaks suggest the virus is now spreading endemically again.

The CDC has recorded 5,182 U.S. cases in 2026, compared with 2,289 in 2025 and 285 in 2024.

Children’s MMR vaccination rates have fallen below the 95 percent level needed to sustain herd immunity, according to the CDC.

Losing the status would carry no formal consequences, but experts say it would mark a serious setback for public health.

The panel is expected to decide whether to revoke the status at its meeting.

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What people are saying

Elizabeth JacobsProfessor emeritus at the University of Arizona
I’m just beside myself about all of this. I literally cannot believe this is happening in the United States.
via Scientific American
Michael OsterholmPresident of the Center for Infectious Disease Research and Policy at the University of Minnesota
When a semi hits your car at 60 miles an hour at an intersection, you don’t need more assessments showing you’ve had an accident.
via Scientific American