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  • MMR (Measles, Mumps, and Rubella)
  • Administering Vaccines

We often need to give MMR vaccine to large adults. Is a 25-gauge needle with a length of 5/8″ sufficient for a subcutaneous injection?

Yes. A 5/8″ needle is recommended for subcutaneous injections for people of all sizes. See’s clinical resource “How to Administer Intramuscular and Subcutaneous Vaccine Injections” at

Last reviewed: June 19, 2023

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