Measles is spreading. It’s a viscous, highly contagious disease — albeit one that can be prevented with vaccines, according to the Centers for Disease control. Some people mistake it for a rash that might dissipate in a few days,

So to recap, for the first two to four days, common measles symptoms in adults include: After this initial phase, you’ll get the characteristic measles rash. It’ll usually start at the top of your body, near your hairline and on your cheeks, and then move downward to your chest and trunk and finally outward to your limbs, Dr. Lovins says.

Vaccination eliminated measles from the U.S. 25 years ago. But it can still spread in pockets where vaccination rates are low, like the west Texas county with a current outbreak. Here's how fast.