They had had one prior dose of the MMR vaccine but they went on to develop a rash on April 25 and tests confirmed they had contracted measles.

Since being being diagnosed, they have been been isolating home.

Another case was identified days later in an adult living in the same county in Illinois.

Their vaccination status is unknown, but they checked into to a local hospital for treatment on April 28 and medical staff quickly isolated them.

Officials are warning anyone who fears they may have been exposed to contact their health provider and monitor for symptoms in what is the latest in a string of measles scares to rock America’s major airports and surrounding neighborhoods