Texas is experiencing its largest measles outbreak in 30 years. The virus has infected more than 600 people and killed two school-aged children.

Texas officials said Tuesday there have been 624 confirmed measles cases in the state since late January. The number reflects 27 additional cases since their last update on April 18. “Sixty-four

Texas has more than 600 known cases of measles as the outbreak in the western part of the state approaches the three-month mark.