A member asked:

Would there be any reason to get the measles / mumps / rubella vaccine again?

7 doctors weighed in across 3 answers

Yes: The only reason to get the vaccine again is if you were found (by blood test) to not be immune. Since rubella infection in pregnancy can cause some severe birth defects, we usually recommend that any woman who might become pregnant be immune to rubella.

Answered 5/10/2014

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Yes: Besides confirmatory blood tests, studies over the years may demonstrate that the immunization immunity wears off. If so, boosters will be required to jump start the immune system.

Answered 6/15/2013

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Dr. Marybeth Lambe answered

Specializes in Travel Medicine

Why 2 MMR's: Actually the 2nd MMR is not given as a booster like all other vaccine series but because 15% of first MMR recipients are 'non responders' and the second dose is meant to catch those in that 15% group. Two MMR doses were found to catch most everyone where one dose missed. If you, instead, have serologic proof you responded to the first dose, repeat vaccine is not needed.

Answered 7/27/2016

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