Health Officials Warn of Measles Exposure at Phoenix Sky Harbor Airport

Travelers who passed through Terminal 4 on January 29 may have been exposed to measles, marking the latest in a string of reported cases across the Phoenix area. Health authorities in Maricopa County are alerting travelers about a possible measles exposure at Phoenix Sky Harbor International Airport late last month. The Maricopa County Department of Public Health confirmed that an individual infected with the virus passed through Terminal 4 on January 29 between 4 p.m. and 8:30 p.m. Officials say the traveler, who is not a local resident, may have exposed others to the virus during that time. Though the traveler has since left the region, health officials are urging anyone who was in that terminal to monitor for symptoms — including fever, cough, runny nose, red eyes, and a rash — through February 19. This marks the sixth reported public exposure in the Phoenix area this year, part of an ongoing effort by health departments to contain the spread. Three local cases have been confirmed so far in 2026. An additional exposure alert remains active for those who attended events at the Arizona Athletic Grounds on January 23 and 24. In contrast, exposure windows have closed for earlier locations in Gilbert, including several retail and fitness venues. Measles, a highly contagious airborne disease, can linger in the air for up to two hours after an infected person has left a space. According to the Arizona Department of Health Services, the state reported 220 cases in 2025, most linked to an outbreak near the Arizona-Utah border. This year, 34 new cases have already been confirmed, with the majority in Mohave County. Health officials emphasize that vaccination remains the best protection. The MMR (measles, mumps, and rubella) vaccine — two doses for children, or at least one for unvaccinated adults — provides strong immunity against the illness. Anyone who develops symptoms should isolate immediately and contact their healthcare provider before visiting a clinic or hospital to avoid further exposure.