Measles exposure at Boise Airport

Idaho health officials warned that anyone who passed through Boise Airport early on March 29 may have been exposed to measles. (healthandwelfare.idaho.gov) The Idaho Department of Health and Welfare said the exposure window ran from 1:30 a.m. to 7:40 a.m. on Sunday, March 29, after a person with measles traveled through the airport. Local public health districts said they are also notifying Idahoans who shared flights with that traveler. (healthandwelfare.idaho.gov) Measles spreads through the air when an infected person coughs, sneezes, or talks, and people who are not protected can catch it up to two hours after that person leaves the area. Idaho’s alert told travelers to watch for fever, runny nose, cough, red watery eyes, and then a rash. (healthandwelfare.idaho.gov) The airport warning landed as measles is already surging across the United States. The Centers for Disease Control and Prevention said 1,714 confirmed cases had been reported in 2026 as of April 9, with 94% tied to outbreaks and 17 outbreaks recorded this year. (cdc.gov) Idaho enters that stretch with unusually low school vaccination coverage. The Centers for Disease Control and Prevention said measles, mumps, and rubella coverage among kindergartners was 92.5% nationwide in 2024-25, while Idaho was at 78.5%, the lowest rate in the country. (cdc.gov) Health officials use 95% coverage as the rough benchmark that keeps measles from spreading easily through a community. The same federal data said only 10 states cleared that mark for measles, mumps, and rubella coverage in 2024-25, and about 286,000 kindergartners nationwide were at school without documentation of a completed measles series. (cdc.gov) The regional backdrop is worsening too. Utah’s outbreak had reached 583 confirmed cases as of April 7, according to the Utah Department of Health and Human Services, and Juab School District said on April 11 that a student at Juab Junior High School had been diagnosed with measles. (aha.org) (ksl.com) Utah’s outbreak began in June 2025 and has become the state’s largest measles outbreak since 1976, according to state-tracking reports cited by local outlets. Utah’s public measles response page also warns that the virus can remain in the air for up to two hours after an infected person has been at a location. (townlift.com) (epi.utah.gov) For Boise travelers, the clock now is about symptoms and timing. Idaho said measles can be severe, especially for infants under 12 months who are not routinely vaccinated, and urged people with possible exposure to contact a doctor and review their measles, mumps, and rubella vaccination status before more travel. (healthandwelfare.idaho.gov)