But under PAHO's definition of elimination, borders matter. If, for example, the chain of measles that started in the U.S.

The United States is on the verge of losing its measles elimination status — a designation it has held for 25 years.

Maricopa County on Jan. 23 confirmed two new cases of measles and says the public may have been exposed at two local big box ...

In the first three weeks of 2026, there have already been more than 400 new measles cases, as the U.S. looks to blow past ...

RFK Jr.'s new CDC deputy said this week he was unbothered by the prospect of the U.S. losing its measles-free status for the ...

The upcoming review of the U.S. measles elimination status comes after cases reached a 30-year high in late 2025.

After a year of ongoing measles outbreaks that have sickened more than 2,400 people, the United States is poised to lose its ...

After a year of ongoing measles outbreaks that have sickened more than 2,400 people, the United States is poised t | A rise ...

A growing measles outbreak in South Carolina has infected more than 600 people since October, with hundreds more being ...

Under Robert F. Kennedy Jr., the Trump administration's health agencies have muddled vaccine messaging. The result is that ...