By R.J. Morales
ALLEN, Texas — A confirmed measles case in a Dallas County resident has prompted a public health warning after the infected person visited three locations in Collin County while contagious.
Dallas County Health and Human Services announced the case Tuesday, Aug. 25, identifying potential exposure sites in Allen, Fairview and Frisco on Aug. 14 and 15.
Health officials said unvaccinated people who were at those locations during the specified times may have been exposed. Measles spreads through the air, and the virus can remain infectious for up to two hours after an infected person leaves an area.
Where the exposures occurred
The first potential exposure occurred Aug. 14 at Turrentine Jackson Morrow Chapel, 2525 Central Expressway North in Allen. DCHHS listed the risk window as 10 a.m. to 2 p.m.
Later that day, the person visited Gloria’s Restaurant, 152 Fountain Circle in Fairview, where the potential exposure window was 12:30 to 5 p.m.
On Aug. 15, the person visited The Revel Patio Grill, 9305 Preston Road in Frisco. The potential exposure window was 7:45 p.m. to midnight.
DCHHS said the listed times include the period during which the virus could have remained in the air after the infected person left.
If you were at one of the locations
Unvaccinated people who were at one of the locations during the identified times should monitor for symptoms for 21 days after the potential exposure, according to DCHHS.
Symptoms typically include high fever, cough, runny nose and red or watery eyes, followed by a rash that begins on the face and spreads down the body.
Anyone who develops symptoms should stay home and call a health care provider or emergency department before arriving, informing medical staff of the possible measles exposure so precautions can be taken to protect other patients.
Infants, pregnant people without evidence of immunity and people with severely weakened immune systems are at greater risk for serious complications and should contact a health care provider promptly if they may have been exposed.
People are generally considered protected if they have documentation of age-appropriate MMR vaccination, laboratory evidence of immunity or confirmation of a previous measles infection. Those born before 1957 are also generally presumed to have immunity.
Questions remain about the Collin County exposures
Dallas County’s announcement did not disclose the patient’s age, vaccination status or how the infection was acquired. It also did not say whether anyone potentially exposed at the three Collin County locations has developed symptoms or tested positive.
Collin County Health Care Services has been contacted to determine whether it is assisting with the investigation, whether Collin County residents are being monitored and whether any cases have been identified in connection with the exposures.
As of Aug. 19, the Texas Department of State Health Services reported 190 confirmed measles cases among Texas residents in 2026.
Similar warnings were issued last year
Collin County residents faced several measles exposure warnings in 2025.
In April, county health officials warned that a person with measles had visited public locations in Plano while infectious. The following month, officials reported what was then Collin County’s third confirmed case of the year after an infected person visited four McKinney businesses between May 19 and May 22.
Another warning followed in June after a Dallas County resident with measles visited two locations in Plano while infectious.
The current warning does not mean measles is spreading in Collin County. So far, the confirmed case announced Tuesday is a Dallas County resident, and health officials have not announced any additional cases resulting from the Allen, Fairview or Frisco exposures.
“Measles is one of the most contagious diseases we know, but it is also highly preventable,” DCHHS Director Dr. Philip Huang said.
He urged people who were at the locations during the identified times to check their vaccination status and monitor for symptoms.
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