Texas' measles outbreak is up to 146 cases. Here's what you need to know about the virus, vaccination and boosters.

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.

DALLAS (AP) — 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.