Measles cases in the U.S. have surpassed 900 as outbreaks continue to spread across the county, according to new CDC data published Friday.

There have been four measles cases reported in the Dallas-Fort Worth area this year: one in Collin County, one in Denton County and two in Rockwall County. State authorities have not officially tied any of those cases to the outbreak that began in Gaines County, and all four appear in the state public health department’s list of “other 2025″ cases.

The new cases in an unvaccinated adult and child come amid a statewide outbreak that has sickened almost 700 people since January, according to the Texas Department of State Health Services.