Measles may be a very rare disease today, but it is highly contagious and can be potentially deadly. And Senator Bill Cassidy says it’s headed for Louisiana.

The majority of the 124 measles cases reported in Texas this year have been in children between five and 17. The first death in an ongoing measles outbreak has been reported in Texas. The Texas Department of State Health Services announced the death of a school-aged child on Wednesday morning.

A hospital in Texas on Wednesday confirmed the death of an unvaccinated child who was infected with measles—the first fatality in a two-state measles outbreak that began in January, according to the Associated Press.