Dropping vaccination rates and changes in U.S. vaccine policy have public health experts concerned that annual measles outbreaks could become more frequent.

Once used for tracking COVID-19 cases, the tracker has become a resource for virus trends in general, including measles.

The CDC reports 1,288 cases in 2025 the highest number since 1992 and three confirmed deaths. One of the strongest outbreaks ...

A wave of anti-vaccine sentiment has spurred measles outbreaks around the world, and could lead to outbreaks of other ...

Measles is a disease caused by the virus Morbillivirus hominis. It’s an RNA virus in the family Paramyxoviridae—meaning it’s ...

Last week, I explained why it matters if the United States were to lose its status of having eliminated measles. That prompted many readers to ask what additional precautions they should take to ...

The U.S. grapples with its largest measles outbreak in over 30 years, putting its disease elimination status at risk if virus ...

The US almost lost its measles elimination status once. Lessons from that episode suggest it will be more difficult to avoid ...

Losing the status is a far bigger deal than most people likely know, and getting it back is no fast or easy feat.

There have been 1,277 confirmed cases of measles this year, which has eclipsed 2019 to become the highest annual total since ...

There have been more than 1270 cases of measles confirmed in the US in 2025, though many cases have likely gone unreported.

Already in 2025, the United States has reported more measles cases than in any full year since the early '90s, according to ...