A measles outbreak in West Texas has topped 120 cases and resulted in the first U.S. death from the illness in a decade.

LUBBOCK, Texas (AP) — A person who was hospitalized with measles has died from measles in West Texas, the first death in an outbreak that began late last month. Lubbock city spokesperson Lauren Adams confirmed the death Wednesday. It wasn't clear the age of the patient, who died overnight.

The news on Wednesday that a child died from measles at a Lubbock hospital is something that infectious disease experts like Dr. Peter Hotez have feared since an outbreak of the virus began spreading in northwest Texas.

A month-long Israeli military operation targeting the four major refugee camps of the northern West Bank - Tulkarem, Nur Shams, Jenin and Al-Fara’a – has prompted a wave of displacement the UN says has not been seen since 1967.