Texas health officials say the number of people with measles has increased to 146 in rural West Texas outbreak that led this week to the death of a school-aged child who was not vaccinated.

Texas is experiencing its largest measles outbreak in 30 years, primarily affecting the South Plains region. A child has died and several people have been hospitalized by the extremely contagious disease that was once considered eradicated,

In rural West Texas, measles has sickened nearly 150 people, most of them unvaccinated. A school-age child has died. The virus is spreading among Gaines County’s Mennonite community, where government mandates are not trusted.