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.

Sign up for The Brief, The Texas Tribune’s daily newsletter that keeps readers up to speed on the most essential Texas news. The number of cases reported in Texas' historic measles outbreak has risen to 683 cases in 29 counties,

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.