This usually goes away without causing permanent damage. Encephalitis occurs in about 1 or 2 cases out of 10,000 cases of mumps. These complications of mumps infection can occur at any age but are more likely to occur in teens and adults than in children. Mumps infection during the early stage of pregnancy may increase the rate of miscarriage, but mumps does not appear to cause any abnormality in the unborn baby. Death related to mumps infection happens in about 1 out of every 10,000 cases.
Prevention is possible Mumps can be prevented by vaccination.
Since 1996, a second does of MMR has also been given at 18 months of age. Adults born in 1956 or earlier do not require vaccination as they likely have had mumps as children and are therefore immune. This can be hives, wheezy breathing, or swelling of some part of the body. If this happens, particularly swelling around the throat, immediately get to your family doctor or hospital emergency. It is suggested that persons stay in the clinic for at least 15 minutes after receiving any type of immunization.