At least 124 cases have been reported since late January, mostly among children and teenagers who were unvaccinated or whose vaccination status was unknown.

Texas authorities on Wednesday announced the first measles death in the state's outbreak of the highly contagious disease. The death, of a school-age child, is the first measles death in the U.S. since 2015,

A school-aged child has died as Texas battles a measles outbreak with over 135 cases. Learn who's at risk and how to check your vaccination status.