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.

SAN ANTONIO — The number of measles cases connected to the West Texas outbreak has now grown to 90. Experts said being unvaccinated drives your chance at contracting the disease much higher, but there's a way to find out if you need the needle.

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.