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

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

State medical experts have confirmed 124 cases of measles in Texas. This is the largest measles outbreak in Texas in 30 years. Here is how it started and an overview of the situation, as of Feb. 25.