Travelers at Washington Dulles Airport may have been exposed to measles, one of the world’s most contagious diseases.

Health officials confirmed that an international passenger tested positive on August 12. The traveler moved through the main terminal, TSA checkpoint, and Concourse B between 1 p.m. and 5 p.m. “Just one infected person can pass measles to 12 to 18 others,” experts warn.

So far this year, Virginia has reported three measles cases, two linked to Dulles. Across the U.S., more than 1,300 cases have been recorded. Most are in children and teens who are unvaccinated or missed their second dose. Tragically, three people have already died in 2025, including two children.

Measles spreads through coughs and sneezes, often starting with fever, cough, or a runny nose. The MMR vaccine remains the best protection, yet vaccination rates are falling. “Vaccine hesitancy is sobering,” said Dr. William Schaffner.

Health officials urge travelers to check their vaccination status. Staying protected isn’t just personal—it protects babies, neighbors, and entire communities.

Would you feel safe flying after this warning?