The most common complication is inflammation of the testicles (orchitis) in males who have reached puberty; rarely does this lead to fertility problems.
Other rare complications include:
•Inflammation of the brain and/or tissue covering the brain and spinal cord (encephalitis/meningitis)
•Inflammation of the ovaries (oophoritis) and/or breasts (mastitis) in females who have reached puberty
Mumps | Complications | CDC
MMR vaccine side-effects
(Measles, Mumps, and Rubella)
What are the risks from MMR vaccine?
A vaccine, like any medicine, is capable of causing serious problems, such as severe allergic reactions. The risk of MMR vaccine causing serious harm, or death, is extremely small.
Getting MMR vaccine is much safer than getting measles, mumps or rubella. Most people who get MMR vaccine do not have any serious problems with it.
• Fever (up to 1 person out of 6)
• Mild rash (about 1 person out of 20)
• Swelling of glands in the cheeks or neck (about 1 person out of 75)
If these problems occur, it is usually within 7-12 days after the shot. They occur less often after the second dose.
• Seizure (jerking or staring) caused by fever (about 1 out of 3,000 doses)
• Temporary pain and stiffness in the joints, mostly in teenage or adult women (up to 1 out of 4)
• Temporary low platelet count, which can cause a bleeding disorder (about 1 out of 30,000 doses)
Severe Problems (Very Rare)
• Serious allergic reaction (less than 1 out of a million doses)
• Several other severe problems have been reported after a child gets MMR vaccine, including:
◦ Long-term seizures, coma, or lowered consciousness
◦Permanent brain damage
Vaccines: Vac-Gen/Side Effects
Damn... looks like the RARE reactions to the vaccine are far worse than the RARE reactions to Mumps itself... why take the ****ing shot then?
It is nature people... it is a big scary world with lots of bad **** going on in it. If I send my kid to school with peanuts and they share with your kid that is allergic who's fault is it?