Measles is caused by a highly contagious virus that’s airborne and spreads easily when an infected person breathes, sneezes ...

Measles vaccination rates among kindergarten students in the Philadelphia region have been declining since the COVID-19 ...

Researchers say that simply isn’t true, except potentially in a small number of people with compromised immune systems who are not supposed to receive it. Read the rest of Matthew Herper’s scorching ...

Older adults may lack protection from measles. Here's the scoop on your risk, how to test immunity and where to find ...

RFK Jr. has claimed measles can be treated with vitamin A and that severe infection is linked to poor diet. But many experts who spoke with ABC News disagreed.

Nearly 10 full years passed since the last measles death in the U.S., but that long stretch came to an end when a child in ...

Vaccine hesitancy was rising even before COVID-19 emerged – but the pandemic exacerbated the trend. More kindergartners are ...

Amid a growing measles outbreak in west Texas and New Mexico, many doctors and nurses are fielding questions from patients ...

We will never totally eliminate hostility to vaccines among our increasingly restive, populist public, but with persuasive messages, we can cut outbreaks and save kids’ lives, writes guest columnist ...

A bout of measles sends the immune system into shock, demolishing critical cells that help our bodies respond to threats.

Measles is one of the most contagious viruses in the world, and can live on surfaces or suspended in the air for two hours.

The new exemption would take effect for K-12 public schools in the 2026-2027 school year and for colleges and universities in ...