Mumps is an acute viral illness that causes a painful inflammation and swelling of the saliva glands. These glands include the parotid, submaxillary, sublingual and buccal salivary glands. Mumps used to be a common infectious disease of childhood until a vaccine was developed in 1967 to immunize children against the virus that causes the disorder. However, recent outbreaks of mumps among adolescents and young adults have raised questions about lifetime immunity from the vaccine.
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