The Texas health department reported 702 cases of measles in the state on Tuesday, an increase of 19 cases since May 2, as the U.S. battles one of its worst outbreaks of the childhood disease.

Texas has reported 702 cases of measles and the deaths of two children since the outbreak began in late January.

Texas’ measles outbreak has grown to 702 cases across 29 counties, according to a Tuesday update from the state public health department. The Texas Department of State Health Services estimates that less than 1% of those cases — or fewer than 10 of the reported cases — are “actively infectious.