A child who was not vaccinated has died from measles in West Texas, the first death in an outbreak that began late last month and the first from measles in the U.S. since 2015. The death was a “school-aged child who was not vaccinated” and had been hospitalized last week,

A school-age child has died of measles in West Texas, the first death from the disease in the U.S. since 2015 according to the CDC.

A child in Texas has died from measles, officials said Wednesday, the first known death in the current large outbreak in West Texas and the first death from measles in the country since 2015. The individual, described as a school-aged child, was not vaccinated. The gender and previous health status of the child was not disclosed.