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Mumps Vaccination and Disease History Assumptions by Age
Use the table as a guide to help determine the age groups most likely under-immunized against mumps.
Download PDF version formatted for print: Mumps Vaccination and Disease History Assumptions by Age (PDF)
| Current Age, Grade or Year of Birth | Assumptions | Rationale for Assumptions |
| Age < 12 months | Not vaccinated; may have maternal antibody | First dose given at 12-15 months |
| Age 12 through 15 months | Probably not yet vaccinated | First dose given at 12-15 months |
| Age 16 months until kindergarten (K) | Age-appropriately vaccinated with 1 dose | Minnesota school and child care requirement |
| Grades K through 6 | Two doses of vaccine likely | Minnesota school requirement for 2nd dose moved from grade 7 to K in 2004 |
| Born 1979 or later | Two doses of vaccine likely | Minnesota school requirement for 2nd dose at 7th grade in 1992 and grades 7-12 in 1996 |
| Born 1972 - 1978 | Possibly 1 or 2 doses | Minnesota school requirement for 1 dose; however, mumps exemption in place throughout school years for this age cohort. Minnesota college requirement for 1 dose of MMR vaccine implemented in 1989. |
| Born 1962 - 1971 | Possibly 1 dose; however, maybe not with current or optimally efficacious vaccine | A live virus mumps vaccine was licensed in 1967, but not routinely used until 1977. MMR available in 1971. |
| Born 1957 - 1961 | Unlikely to have been vaccinated; possible history of disease | Was beyond kindergarten when vaccine licensed |
| Born before 1957 | Likely history of disease | Mumps disease prevalent during childhood of this age cohort |
Last Updated: 06/18/2025