All things must come in threes, and that includes mumps vaccinations. Unless you want to deal with the consequences, which are: mumps.
A mumps outbreak has infected at least 20 students at the University of California at Berkeley, according to the Contra Costa Times. And all twenty of those unfortunately afflicted had received two vaccines. Three is the recommended dosage for people living or working on college campuses, the newspaper reported.
In the wake of the disease outbreak -- which is "rare," the newspaper said -- "hundreds" of students and employees were lining up at the university health center for a free vaccine.
More than 1,000 people were expected to receive the shot on Thursday, according to university officials.
The source of the outbreak is not yet known.