Only MMR in the US: In the US, Merck is the only manufacturer of MMR vaccine. Years ago, Merck packaged the Measles, Mumps, and Rubella vaccines individually and also together as MMR. The vaccine is only available as the MMR combination now. A person can get the MMR shot if she needs any one or more of the 3 components... and she will get a boost in protection against each of the 3 diseases.
Answered 5/1/2019
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