BOISE, Idaho — Health officials in Idaho confirmed a measles case linked to an airline traveler, raising alarms in a state with the lowest vaccination rate in the U.S. The infected individual arrived at Boise Airport earlier this week, and authorities are now tracing potential exposures at the airport and surrounding areas.
According to data from the Idaho Department of Health, only 78.5% of kindergartners in the state were vaccinated against measles during the 2024-2025 school year. This figure falls significantly below the 95% threshold recommended by the Centers for Disease Control and Prevention (CDC) to achieve herd immunity.
“This case underscores the critical importance of vaccination,” said a spokesperson for the Idaho Department of Health, who requested anonymity due to the ongoing investigation. “Measles is highly contagious, and unvaccinated individuals are at the greatest risk of infection and severe complications.”
Idaho has historically struggled with vaccine hesitancy, driven in part by anti-vaccine sentiment and misinformation campaigns. Analysts point to the state’s rural demographics and libertarian culture as contributing factors to its low vaccination rates.
The CDC warns that measles outbreaks can spread rapidly in communities with insufficient immunization. “When vaccination rates drop, we see a resurgence of preventable diseases,” said a CDC official. “This is a public health issue that requires immediate attention.”
Looking ahead, Idaho health officials are urging parents to ensure their children are up-to-date on vaccinations. The state is also considering awareness campaigns to address vaccine misinformation and boost immunization rates.