It is the second confirmed measles death in the U.S. in a decade. If the outbreak continues at the current pace, the nation may lose its “elimination” status.

A second child has died from the highly contagious measles virus as an outbreak in western Texas continues to grow. The school-aged child was not vaccinated, had no underlying health conditions and was in hospital suffering complications from measles, Aaron Davis, the vice president of UMC Health System, told the BBC.

About 500 Texans, mostly young unvaccinated children, have contracted the disease. The U.S. health secretary is expected to come to Texas.