Confirmed measles cases at Dilley family detention center prompt lockdown

Federal authorities confirmed that two people detained at the South Texas Family Residential Center in Dilley, Texas, have active measles infections, prompting Immigration and Customs Enforcement to quarantine contacts and halt movement inside the facility. The Texas Department of State Health Services confirmed the infections on January 31, officials said, setting off immediate public-health and political concern.

DHS spokesperson Tricia McLaughlin said ICE Health Services Corps “immediately took steps to quarantine and control further spread and infection, ceasing all movement within the facility and quarantining all individuals suspected of making contact with the infected.” She added that medical staff are monitoring the detainees’ conditions and taking “appropriate and active steps to prevent further infection.”

The Dilley complex, roughly 70 miles south of San Antonio and the nation’s only current immigrant family detention center, houses adults with children in a congregate setting that public-health experts and advocates say heightens the risk of contagious diseases such as measles. Measles is known to spread rapidly in close quarters, and medical professionals and immigration advocates raised alarm after the confirmation that cases had been detected.

The quarantine response included isolating the two infected detainees and restricting the movement of those identified as suspected contacts within the facility. DHS and ICE said detainees continue to receive medical care; agency statements defended the scope of services, saying “it is a longstanding practice to provide comprehensive medical care from the moment an alien enters ICE custody. This includes medical, dental, and mental health services as available, and access to medical appointments and 24-hour emergency care. This is the best healthcare than many aliens have received in their entire lives.”

The measles announcement also disrupted planned oversight by lawmakers. Shortly after arranging an inspection of the facility, Rep. Joaquin Castro and nine other members of Congress canceled a visit scheduled for February 6. Castro’s office said, “Shortly after giving notice that Congressman Castro and nine other members of Congress would inspect Dilley on February 6th, 2026, the Congressman and our staff were notified that there were two reported cases of measles at the Dilley detention center. As a result, our visit was cancelled and we will not return to Dilley next week.” Castro also posted on X that “Because of the close-quarter conditions at Dilley, lack of prompt medical response and capacity, and lack of expertise with diseases such as measles, Dilley is not equipped to combat any spread.”

Officials have not released the ages, nationalities, or vaccination status of the two infected detainees, and the duration of the halted movement has not been specified. Reporting tied the timing of the confirmed cases to the recent release of a high-profile 5-year-old, Liam Conejo Ramos, and his father from the facility; DHS told local media that those two had been vaccinated and examined before release, and that they would not have been released if there had been a risk of exposure.

The incident returns focus to longstanding questions about health care, oversight, and conditions inside immigrant family detention. Public-health experts say containment in congregate settings depends on rapid testing, clear reporting, vaccination campaigns, and transparent coordination with state health departments. Advocates argue that civil immigration detention of families creates avoidable risks for children and adults, and that the federal government must improve outbreak preparedness or consider alternatives that reduce exposure in close quarters.

State and federal health authorities remain the primary sources for updates as contact tracing and quarantine efforts continue at the Dilley facility.