Why do children get the MMR vaccine instead of separate measles, mumps, and rubella shots?
Quick Answer
Combining the three vaccines reduces the number of injections while still protecting against all three diseases. The antigens do not interfere enough to prevent strong immunity in the combined shot.
The Full Story
The MMR vaccine packages protection against measles, mumps, and rubella into a single dose. This makes immunization easier for families and health systems and improves the chance that children complete the schedule. Combining antigens can be done safely when the immune response remains strong for each component. The MMR vaccine has been used for decades and is a standard part of childhood vaccination programs in many countries. It has been central to the dramatic decline of these once-common childhood infections.
Key Facts
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