Tetanus ToxoidTetanusToxoidsTetanus ToxinTetanus AntitoxinDiphtheria ToxoidClostridium tetaniDiphtheria-Tetanus-acellular Pertussis VaccinesDiphtheria-Tetanus-Pertussis VaccineDiphtheriaInfant, NewbornDiphtheria-Tetanus VaccineInfant, PrematureAntibodies, BacterialVaccines, ConjugateDiphtheria AntitoxinImmunization, SecondaryImmunization ScheduleImmunoglobulin GWhooping CoughInfant, Newborn, DiseasesImmunizationInfant CareVaccinationInfant, Premature, DiseasesPoliovirus Vaccine, InactivatedPertussis VaccineInfant FoodVaccines, CombinedHaemophilus VaccinesBacterial VaccinesStaphylococcal ToxoidAntibody FormationPolysaccharides, BacterialInfant FormulaMeningococcal VaccinesInfant BehaviorImmunity, Maternally-AcquiredAntitoxinsVaccinesInfant MortalitySudden Infant DeathAdjuvants, ImmunologicEnzyme-Linked Immunosorbent AssayPregnancyHexobarbitalHemagglutination TestsInfant Nutritional Physiological PhenomenaLymphocyte ActivationImmunoglobulin MAntibody AffinityInfant, Very Low Birth WeightT-LymphocytesInfant, Low Birth WeightHaemophilus influenzae type bHepatitis B VaccinesAntibody SpecificityImmunoglobulin AAntigens, BacterialAntigensBacterial CapsulesBordetella pertussisImmunologic MemoryPneumococcal VaccinesNew GuineaTime FactorsNeisseria meningitidisAntibodiesImmunization ProgramsBreast FeedingTuberculinInfant WelfareVaccines, SyntheticB-LymphocytesHemocyaninMice, Inbred BALB CEpitopesCholera ToxinNeisseria meningitidis, Serogroup CInfant, Extremely Low Birth WeightMeningitis, MeningococcalCross ReactionsDose-Response Relationship, Immunologic