Measles cases linked to a West Texas outbreak have now been confirmed in two North Texas counties, marking the virus's continued spread across the state. State health officials said cases have been identified in Collin and Rockwall counties,

The measles outbreak that began in Gaines County has officially reached the Dallas-Fort Worth area, with two cases now linked to the outbreak. One measles case in Collin County and one case in Rockwall County are now included in the outbreak numbers, according to a Tuesday update from the Texas Department of State Health Services.

The measles outbreak centered in West Texas rose by eight cases on Tuesday but hit three new counties, according to health officials.