A second child with measles has died in Texas where hundreds of cases of the disease have been recorded in recent weeks, prompting U.S. Health Secretary Robert F. Kennedy Jr. to plan a trip to the state, local media reported early on Sunday.

The exact cause of the death is under investigation, media reported.

Axios, which first reported the news, said Kennedy's trip was arranged after he was informed of the death. NBC News said Kennedy planned to attend the funeral scheduled for Sunday.

The U.S. Department of Health and Human Services did not immediately respond to a Reuters request for comment.

Kennedy, a longtime vaccine skeptic, said in his immediate response to the first measles death in February that such outbreaks are commonplace.

Many people opposed to vaccines argue vaccination should be a personal choice. Others say growing vaccine skepticism has resulted in pockets of unvaccinated or under-vaccinated individuals who are fertile ground for infection.

The Texas Department of State Health Services on Friday reported 59 new measles cases in three days, taking the state total to 481 since late January.

As of Thursday, the U.S. Centers for Disease Control and Prevention reported a weekly nationwide increase of 124 measles cases, bringing the total to 607.

The nationwide count totaled 285 for all of 2024.