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,

Here’s what to know about the outbreak after the first U.S. death since 2015 from the highly contagious—but preventable—respiratory disease.

An unvaccinated child in Lubbock, Texas died after being hospitalized last week due to measles. It's the first death in the outbreak that began last month, and the first death from measles in the United States since 2015.