IOWA CITY, Iowa (AP) — University of Iowa health specialists will be providing students with a third dose of the measles, mumps and rubella vaccine free of charge in an effort to combat the spread of mumps on campus. The Iowa City Press-Citizen reports that the announcement of the free vaccine was made Friday.

Lisa James with the university’s clinical outreach says the university has ordered 3,000 doses of the vaccine and will being holding vaccination clinics next week for students under 25. James says between 100 and 110 cases of mumps have been confirmed on the campus this year. There are usually only 10 to 20 reported cases a year statewide.

The viral infection’s symptoms include swollen salivary glands, fever and muscle aches. It spreads easily in confined spaces.