Major US airport placed on alert after a passenger was reported to have a highly contagious illness

Public health authorities in Illinois have issued a detailed advisory after a confirmed case of measles was linked to Chicago’s O’Hare International Airport, one of the busiest air travel hubs in the United States. The announcement has drawn significant attention due to the combination of high passenger traffic and the highly contagious nature of the measles virus. Officials emphasized that even brief exposure in enclosed and crowded spaces such as airport terminals can carry a potential risk of transmission.

The advisory is part of a broader effort to prevent further spread and to quickly identify anyone who may have been exposed during the relevant time period. According to health officials, the confirmed case involved an individual who spent an extended period inside Terminal 1 at O’Hare International Airport during April 22 and April 23.

The exposure window was reported to last approximately from 10 a. m. to 8 p.