Measles is a highly contagious disease. Here's what you should know about how to protect yourself against measles, as well as what's happening in Texas and New Mexico.

The number of measles cases in Texas has grown to 90 with two more West Texas counties reporting infections, according to the state health department update on Friday.

At least 58 cases have been confirmed. Health officials — who are scrambling to get a handle on the vaccine-preventable outbreak — suspect 200 to 300 people may be infected.