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Booster immune response in children 6–7 years of age, randomly assigned to four groups with two MMR vaccines applied by aerosol or by injection

VaccinologyVaccine SafetyVaccinationChildren 6–7Vaccine DevelopmentMmr VaccinesImmunodeficienciesVaccine SurveillanceImmunologyImmunodominanceHumoral ImmunityVaccine EfficacyImmune FunctionT Cell ImmunityBooster Immune ResponseImmune SystemMedicineVaccine Research