Dallas County Health and Human Services (DCHHS) confirms the first case of measles in a Dallas County resident for 2025. The case involves a female in her mid-twenties who was fully vaccinated. The individual was contagious beginning May 30, 2025, until June 7, 2025. The individual has received care, and public health officials are working to identify and notify individuals who may have been exposed. This is an ongoing investigation of an isolated case at this point as the exposure source is unknown.