Mumps is a viral illness that can cause fever, body aches, headaches, fatigue, swelling of the salivary glands, or pain with chewing and swallowing. About a third of people who contract the mumps virus do not develop any symptoms.
Mumps is most commonly spread when an infected person coughs, sneezes, or talks and a non-infected person inhales respirator droplets that contain the virus. Most mumps cases do not lead to serious complications.
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