Health officials have issued a warning after a traveller at Washington Dulles International Airport was diagnosed with measles, one of the world's most contagious diseases. The passenger, who arrived on an international flight, passed through the main terminal and security checkpoint before heading to Concourse B between 1pm and 5pm on August 12.
Anyone present at the airport during that time may have been exposed to the virus, which spreads at a rate of one infected person to 12 to 18 susceptible individuals. Officials urge travellers to check their vaccination status, as measles is highly infectious and can cause serious illness.
So far in 2025, Virginia has recorded only three measles cases, one linked to this incident. Across the United States, more than 1,375 cases have been reported, with over 60% in children and teenagers. 95% of cases occurred in unvaccinated individuals, and three deaths have been recorded, all in unvaccinated people.
Infections are at their highest since 1992, when over 2,100 cases were recorded. Researchers at Stanford University warn that the US may lose its measles elimination status this year if vaccination rates do not improve. The measles vaccine is given in two doses: the first after 15 months, and the second at four to six years of age.
Symptoms include fever, cough, runny nose, red and watery eyes, spots in the mouth, and a characteristic rash. Anyone experiencing these symptoms after exposure should seek medical advice.
