As Texas continues to battle a growing measles outbreak largely among its unvaccinated children, six other states have confirmed cases, as well.

The measles outbreak in rural West Texas has grown to 58 cases as of Tuesday. Eight people in neighboring eastern New Mexico also have been diagnosed with the highly contagious disease.

Measles is spreading across the U.S., with an outbreak growing in Texas and cases reported in nearby states. Experts explain whether or not you should be concerned.