Five more cases of mumps have been confirmed in an outbreak at Ohio State University, raising the total to 28.
Columbus Public Health reports all but five of those infected are students. One is a staff member, and another is a student's relative. Health officials say the other three cases involve people who don't study or work at Ohio State but have links to the university community.
Investigators are mapping cases to find links and determine how people became infected.
The confirmed cases involve 12 women and 16 men. They range in age from 18 to 48. Three of them were hospitalized for at least one day.
Ohio State employees and students who returned this week from spring break have been urged to take precautions to keep themselves healthy.