The Illinois Department of Health has issued a warning for anyone that was in Chicago O'Hare Airport on Wednesday, January 10 after a passenger tested positive for measles.
A passenger, with a confirmed case of the disease, arrived on an global flight on Wednesday, Jan. 10.
The Illinois Department of Public Health said those who were at the airport between 6:30 a.m. and 1 p.m. local time might have been exposed.
The Centers for Disease Control and Prevention has contacted the people who sat next to the infected passenger on the flight.
Measles is a highly contagious disease caused by a virus, according to public health officials. All in all, for every 1,000 children who are exposed to the virus, one or two will die from measles.
If infected, you could develop symptoms as late as January 31, 2018.
If you develop symptoms of measles, the New Jersey Department of Health recommends that you call a health care provider before going to a medical office or emergency room.
"Getting vaccinated not only protects you, it protects others around you who are too young to get the vaccine or can't receive it for medical reasons".
The Illinois Department of Public Health said it's possible that symptoms may not show, for those who may have been affected by the passenger at Chicago O'Hare, until as late as January 31. These include a rash that starts growing on the face or neck, then spreads to other parts of the body, a high fever, runny nose, coughs, and red or watery eyes.