Use of an exemption to immunization due to conscientiously held beliefs prohibition for immunization against measles, mumps, and rubella

SF 3439 prohibits using "conscientiously held beliefs" as an exemption for measles, mumps, and rubella (MMR) vaccines in Minnesota schools and child care facilities. It removes the current option for parents to exempt children based on personal beliefs for MMR immunizations, requiring instead that parents provide either proof of vaccination or a medical exemption by August 1, 2026. This affects parents of children enrolled in preschools, pre-K programs, and K-12 schools, as well as child care centers and licensed exempt facilities. The bill amends Minnesota Statutes section 121A.15 to eliminate the existing exemption under subdivision 3(d) for MMR specifically, while preserving medical exemptions under subdivision 3(c). It takes effect on August 1, 2026.