Immunization, Vaccines and Biologicals


Mumps is an infection caused by a virus. It is sometimes called infectious parotitis, and it primarily affects the salivary glands.

Mumps is mostly a mild childhood disease. It most often affects children between five and nine years old. But the mumps virus can infect adults as well. When it does, complications are more likely to be serious. As more children receive mumps vaccine, it is expected that cases will become more common in older children than in younger ones.

WHO position papers

Further information

Last updated: 25 January 2008