The US has now hit nearly 900 measles cases across 30 states this year – a more than threefold increase from the total number ...

The measles rash usually doesn’t appear for more than a week after someone has been exposed. Other symptoms are better early indicators of a potential measles case, health experts say.

With one-fifth of states seeing active measles outbreaks, the U.S. is nearing 900 cases, according to figures posted Friday ...