A second child with measles in Texas has died amid an outbreak that's sickened more than 480 people in the state since January. Fifty-six of those who have gotten measles have been hospitalized as of Friday,

A second child who was diagnosed with measles has died in Texas, marking another death in a growing measles outbreak that has so far sickened hundreds of people, hospitalized dozens and spread to nearby states.

U.S. Health Secretary Robert F. Kennedy Jr. has traveled to the epicenter of Texas' measles outbreak after a second school-aged child who was not vaccinated died from a measles-related illness.