At least 124 cases have been identified in Texas since late January, mostly among children and teenagers who are unvaccinated or whose vaccination status was unknown.

Measles causes a fever, rash and cough, among other symptoms, and can be particularly harmful for babies and young children, according to the Centers for Disease Control and Preve

The death was a “school-aged child who was not vaccinated” and had been hospitalized last week, Texas officials said Wednesday.