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

The uptick in measles cases has left many people wondering about early signs of measles, whether they need an updated vaccine and treatment options.

Measles is an extremely contagious vaccine-preventable disease that can lead to death or disability. It also wipes out immune ...

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.

Former CDC director Dr. Rochelle Walensky called for stronger, nationwide guidance on infant measles vaccine doses in a new opinion paper published Friday.

As the measles outbreak in Texas and New Mexico continues to grow, doctors say this is a good time to remember just how dangerous measles can be - even years after an infection.