Mumps cases at Chapman University have reached 12, public health officials said Wednesday.
Jessica Good, a spokeswoman for the Orange County Health Care Agency, said there are six lab-confirmed cases and six probable cases. Last week, with the tally of cases at nine, Chapman held two vaccination clinics for students and staff to receive the Measles, Mumps, Rubella (MMR) vaccine. In all, 342 vaccines were given, said Chapman spokeswoman Sheri Ledbetter.
The outbreak started in late January among law students and later spread to the undergraduate population.
Measles has an incubation period of 12 to 25 days.