MMRV vaccine side-effects
(Measles, Mumps, Rubella, and Varicella)
What are the risks from MMRV vaccine?
A vaccine, like any medicine, is capable of causing serious problems, such as severe allergic reactions. The risk of MMRV vaccine causing serious harm, or death, is extremely small.
Getting MMRV vaccine is much safer than getting measles, mumps, rubella, or chickenpox.
Most children who get MMRV vaccine do not have any problems with it.
Mild Problems
Fever (about 1 child out of 5).
Mild rash (about 1 child out of 20).
Swelling of glands in the cheeks or neck (rare).
If these problems happen, it is usually within 5-12 days after the first dose. They happen less often after the second dose.
Moderate Problems
Seizure caused by fever (about 1 child in 1,250 who get MMRV), usually 5-12 days after the first dose. They happen less often when MMR and varicella vaccines are given at the same visit as separate shots (about 1 child in 2,500 who get these two vaccines), and rarely after a 2nd dose of MMRV.
Temporary low platelet count, which can cause a bleeding disorder (about 1 child out of 40,000).
Severe Problems (Very Rare)
Several severe problems have been reported following MMR vaccine, and might also happen after MMRV. These include severe allergic reactions (fewer than 4 per million), and problems such as:
Deafness.
Long-term seizures, coma, lowered consciousness.
Permanent brain damage.
Because these problems occur so rarely, we can’t be sure whether they are caused by the vaccine or not.
Connect With Us