The measles outbreak that began in West Texas is still growing, with exposures possible as far away as San Marcos and San Antonio.

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 growing number of Central Texas health departments are warning residents of possible exposure to measles, the latest sign that the outbreak in West Texas is spreading across the state. Why it matters: Measles is a highly contagious and potentially life-threatening disease that has surged in areas with high vaccination exemption rates.