The school says one to two students are showing up daily at campus health clinics with possible symptoms of the contagious viral illness.
Seven cases have been confirmed with the past few weeks. While that number is relatively small, Craig Roberts, epidemiologist for University Health Services, says all of the cases were fully immunized as children with two doses of the measles-mumps-rubella vaccine.
While most people immunized against mumps are protected for life, some may still get it due to waning immunity.
UW-La Crosse has one confirmed and two suspected case of mumps.
The Milwaukee Journal Sentinel reports statewide, there were 14 confirmed mumps cases as of Friday.