Four of the newly reported cases are located in Dallam County, 200 miles north of Gaines County where the outbreak originated.

A measles outbreak in northwest Texas grew to 124 cases in nine counties on Tuesday, and health officials warned that residents in other parts of the state may have been exposed to the highly contagious respiratory illness.

The Department of State Health Services (DSHS) is reporting 124 cases as of Tuesday, Feb. 25. Gaines County – where the outbreak began in late January – bears the brunt of those cases, with 80. Other counties with cases include Dallam, Dawson, Ector, Lubbock, Lynn, Martin, Terry and Yoakum.