Here’s what you need to know. First, make sure your family is up to date on MMR vaccinations. That’s either one or two doses of the vaccine, depending on the kids’ ages. Remind them to not share eating utensils, cups or plates and to wash their hands frequently to prevent the spread of germs. Make sure they cover their mouth when coughing or sneezing to prevent the mumps virus from being released into the air and spreading. And most importantly, if your child does get sick, keep him out of group activities like summer camp. The Health Department says people who get mumps can spread it for 5 days after they develop symptoms.