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

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.

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