Dallas County has confirmed its first case of measles in 2025, health officials announced. The patient, a woman in her mid-20s, was contagious from May 30 through June 7 and visited two public locations in Plano during that time.

According to Dallas County health officials, a woman in her mid-20s who was fully vaccinated contracted the highly contagious disease and interacted with the public while contagious at least twice.

A Dallas County resident has tested positive for measles, the first case in a county resident so far this year. Officials at Dallas County Health and Human Services announced the case on Thursday.