One more case of the mumps in Douglas County was reported Friday.
Of the 22 cases, 18 people infected are Kansas University students, and KU health officials and administrators have taken precautions within the last few days to notify parents and students about preventive measures.
The number of KU cases climbed by two because officials did not know until Friday that one of the diagnosed cases was a student.
County and KU health officials talked Friday about the mumps during a news conference at Watkins Health Center. Infected students have been asked to isolate themselves as much as possible to avoid risking infecting others.