In an update on the mumps outbreak Indiana University (IU) Bloomington, school officials now report 31 cases since the outbreak was declared on Mar. 12. In recent years there have been mumps outbreaks on college campuses, including Bloomington.

Infographic aimed at college students depicting symptoms of mumps and steps they can take to protect themselves.

Nationally, from January 1 to April 26, 2019, 41 states and the District of Columbia in the U.S. reported mumps infections in 736 people to CDC.

Anyone who has not had two doses of mumps vaccine (usually via the MMR or measles-mumps-rubella vaccine) is at risk for mumps. Even those who have had two MMR vaccines can get mumps because the vaccine does not produce 100% immunity.  Another risk for getting mumps is being on a college campus with a mumps outbreak.

The MMR vaccine is safe and prevents mumps at the rate of 88% on average after two doses.