The Texas Department of State Health Services on Tuesday gave more details about potential measles exposures in San Marcos and San Antonio, and added New Braunfels to the list of affected cities. It also said that the exposures in the three cities were by the same person.

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.

Officials in Central Texas are warning the public about a possible spread of measles as they say a person who visited the area had tested positive for the disease. The Hays County Health Department claimed Sunday that the patient is an individual who was in San Marcos—about 30 miles southwest of Austin—and spent time at a local college and restaurant between 3 p.