On February 5, 2026, the Maine CDC confirmed one case of measles in an adult from Penobscot County who had recently traveled to a state with measles cases. This person was infectious from January 28 through February 5. Exposure information is included in the message body below. This is the first case of measles reported in Maine since 2019. Clinicians should maintain heightened clinical suspicion for measles to identify early potential cases, and prevent the spread of disease, and follow appropriate infection control practices to reduce spread in health care facilities. Potentially exposed persons should review their immunization status and monitor for possible measles symptoms. The best protection against measles is vaccination.