The university said in an email that a visitor touring the main campus for UTSA Day earlier this month tested positive for the highly infectious disease.

Warnings have also gone out to residents of San Marcos and New Braunfels due to visits from an infected person.

The Texas measles outbreak is up to 124 cases, according to the latest numbers by the Texas Department of State and Health Services. Five of those cases are in unvaccinated patients, according to the news release.

A measles outbreak in Texas has reached San Antonio, with 90 cases reported, mostly in children. Vaccination remains crucial to control the spread.

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.

The Hays County Health Department said a Gaines County resident visited San Marcos, where Texas State is located, on Feb. 14. That individual has since tested positive for measles.

Officials say an individual who tested positive for the virus in West Texas traveled to two major universities and one of the nation's busiest tourist attractions — the San Antonio River Walk.

An unvaccinated child has died as the Texas measles outbreak reaches 124 cases. Public health officials also warn of potential spread in San Marcos and San Antonio.

Texas faces its worst measles outbreak in over 30 years, with the first US measles death since 2015, prompting calls for action from Democratic leaders.