Doctors on the campus of the University of Illinois say they have encountered 10 new cases of the mumps just since spring break.
Some folks expect that they could see 2-3 new cases popping up each week until the end of the semester.
The latest increase appears to be part of a larger outbreak throughout the Midwest.
One county in Ohio for example has roughly 600 cases of the illness.
150 of those happen to be on the campus of Ohio State University.