A child in West Texas has died of measles, state health officials said on Wednesday, the first reported U.S. death from the highly contagious disease in a decade, as a Texas outbreak has grown from a handful of cases to more than 130 across two states.

The unvaccinated school-age child is the first confirmed fatality in Texas’s worst measles outbreak in three decades.

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.