RFK Jr. voices support for measles vaccine after second child dies in Texas 01:07. At least six children at a day care in Lubbock, Texas, tested positive for measles amid the stat

A second child has died from measles amid an ongoing outbreak that is sweeping across ... Editor's note: The map in this story has been updated.

A measles outbreak that has caused the deaths of two school-aged children has now surpassed more than 500 cases across Texas, according to health officials. The latest update from the Texas Department of State Health Services shows that 505 people have been infected with measles since the outbreak began in late January in the South Plains region.

Texas as of April 8th, including two deaths. While Tom Green County has no cases, the health department has warned of potential exposure, and local doctors are preparing for possible spread.

Texas confirmed 505 measles cases in 22 counties on Tuesday. About 70% of these cases were confirmed in children under the age of 18.

A public health official in Texas recently warned that the state's ongoing measles outbreak could last a year. Why are cases expected to keep rising?