A child who was hospitalized with measles in Texas has died, state health officials said this week. It marks the first death in the state's latest outbreak — the largest such outbreak in close to 30 years — which has left more than 140 people infected.

The number of people with measles in Texas increased to 146 in an outbreak that led this week to the death of an unvaccinated school-aged child, health officials said Friday. The number of cases — Texas’ largest in nearly 30 years — increased by 22 since Tuesday.

In Texas, there were 146 cases of measles across the state and the South Plains, with 20 patients hospitalized. The best way to prevent getting sick is to get two doses of a measles vaccine.