LUBBOCK, Texas (AP) — A person who was hospitalized has died from measles in West Texas, the first death in an outbreak that began late last month. Texas Tech University Health Sciences Center spokesperson Melissa Whitfield confirmed the death Wednesday. It wasn’t clear the age of the patient, who died overnight.

Texas Tech University Health Sciences Center spokesperson Melissa Whitfield confirmed a person who was hospitalized with measles has passed away, marking the first death in the outbreak, according to a report from the Associated Press.

A young unvaccinated boy with measles died in Texas overnight, the Texas Department of State Health Services announced Wednesday, the first fatality in the U.S. from the respiratory disease in a decade.