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  • MMR (Measles, Mumps, and Rubella)
  • For Healthcare Personnel

A 22-year-old female is going to pharmacy school and the school wants her to have a second dose of MMR vaccine. She had the first dose as a child and developed measles within 24 hours of receiving the vaccine. Recent serologic testing showed she is immune to mumps and measles but not immune to rubella. Can I give her a second dose of the MMR with her having measles after the first dose?

Yes, as a healthcare professional, this person should get a second dose of MMR to ensure she is immune to rubella. There is no harm in providing MMR to a person who is already immune to one or more of the components. If she developed measles only one day after getting her first MMR, she must have been exposed to the disease prior to vaccination.

Last reviewed: June 19, 2023

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