Students at Dalhousie University account for more than one-third of Nova Scotia 's 64 cases of mumps in a recent outbreak.  One of the school's residences has been declared a quarantined area in an effort to contain the illness, and 10 Dal students are in voluntary isolation.  According to the school, many of these had single rooms and were easily able to isolate themselves. Dalhousie dealt with a mumps outbreak last year as well, and according to a spokesperson, the situation is well under control.  Students in their 20s are susceptible to getting sick, as they grew up in a period when only one dose of the vaccine was administered.  There are currently 15 cases in New Brunswick as well.  Canadian Press | The Guardian