Eighteen of the sickened Texans have been hospitalized during the outbreak, as Robert F. Kennedy Jr. said the cases were “not unusual.”

More than 130 people have been infected with measles across Texas and New Mexico. The previous measles death in the U.S. occurred in 2015.

An unvaccinated New Mexico adult who tested positive for measles has died, the second death in a growing measles outbreak centered along the West Texas-New Mexico border, officials said Thursday. The individual did not seek medical care before death,