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,

Health officials say an unvaccinated child died at Covenant Health in Lubbock. The measles outbreak has now grown to more than 120 cases in Texas since January.

Covenant Children's Hospital in Lubbock, Texas, has confirmed the first death in the state from measles occurred at its facilities. Here is what we know.