A patient who was hospitalized with measles in Texas has died, the Associated Press reported on Wednesday. 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 120 people infected.

The US has reported its first measles-related death since 2015, with a child in West Texas confirmed as the victim. Read on to know why experts are warning about a massive spread of this disease in the upcoming days.

Texas' measles outbreak is up to 90 cases. Here's what you need to know about the virus, vaccination and boosters.