Measles Alert After Infected Traveler Passes Through Phoenix Airport

PHOENIX, Arizona — Health officials have confirmed that a person infected with measles traveled through Phoenix Sky Harbor International Airport on June 10. The Maricopa County Department of Public Health (MCDPH) stated that the potential exposure took place in Terminal 4, specifically in Concourses C and D, from 5 p.m. to midnight.

Dr. Nick Staab, Chief Medical Officer for MCDPH, emphasized the urgency of the situation. ‘MCDPH is coordinating with other agencies to notify people who may have been exposed so they can watch for symptoms and get care if any develop,’ he said. ‘With a virus as highly infectious as measles, it’s a reminder that we all should stay up-to-date on our vaccines to keep ourselves and those around us safe.’

The health department noted that measles can linger in the air for up to two hours after an infected person has left the area. This risk is particularly concerning as anyone on the same flight as the infected passenger will be notified by local health officials.

Officials highlighted that approximately 90% of unvaccinated individuals exposed to measles will contract the disease. Symptoms typically manifest between seven to 12 days following exposure, but can take up to 21 days to appear. Those who suspect they have been exposed should monitor for symptoms and seek medical attention without entering healthcare facilities first to prevent exposing others.

As of June 9, the Arizona Department of Health Services reported four additional cases of measles in Navajo County, all linked to unvaccinated individuals who had traveled internationally. Nationwide, the Centers for Disease Control and Prevention reported 1,197 cases in 2025, a significant increase compared to previous years.

Dr. Staab strongly urged those who are not vaccinated to consider getting the measles, mumps, and rubella (MMR) vaccine. ‘Measles is both highly contagious and preventable,’ he stated. ‘The vaccine is very effective, and we want to ensure that we don’t see further spread in the community.’

For any questions regarding vaccination status, individuals in Arizona can contact the CARES Team at 602-506-6767. Health officials are actively working to prevent additional infections and ensure public safety.