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Meningococcal InfectionsMeningitis, MeningococcalMeningococcal VaccinesVaccinationNeisseria meningitidisMass VaccinationNeisseria meningitidis, Serogroup CNeisseria meningitidis, Serogroup BNeisseria meningitidis, Serogroup AVaccines, ConjugateNeisseria meningitidis, Serogroup W-135Antibodies, BacterialBacterial VaccinesInfluenza VaccinesImmunization ScheduleImmunization ProgramsPolysaccharides, BacterialImmunization, SecondaryNeisseria lactamicaNeisseria meningitidis, Serogroup YBlood Bactericidal ActivityDisease OutbreaksSerotypingCarrier StateImmunity, HerdVaccinesBacterial Outer Membrane ProteinsHepatitis B VaccinesAntigens, BacterialPorinsInfluenza, HumanBacterial CapsulesPapillomavirus VaccinesVaccines, CombinedTetanus ToxoidSmallpoxImmunoglobulin GPneumococcal VaccinesSerum Bactericidal Antibody AssayMeasles VaccineSmallpox VaccineVaccines, DNAAntibodies, ViralCancer VaccinesViral VaccinesDiphtheria ToxoidTransferrin-Binding ProteinsNigerVaccines, SyntheticBCG VaccineInfant, NewbornMeaslesDiphtheria-Tetanus-Pertussis VaccineEnzyme-Linked Immunosorbent AssayDiphtheria-Tetanus-acellular Pertussis VaccinesPurpuraSerum Bactericidal TestMeasles-Mumps-Rubella VaccineIncidenceNeisseriaPopulation SurveillanceHaemophilus VaccinesNasopharynxImmunizationPharynxVaccines, AttenuatedAdjuvants, ImmunologicUnited StatesAntibody FormationBacterial ProteinsTime FactorsBacteremiaHepatitis A VaccinesChickenpox VaccineTetanusVaccines, InactivatedRubella VaccineVaccines, SubunitCross ReactionsInfluenza A Virus, H1N1 SubtypeBurkina FasoSulfadiazineSaudi ArabiaSeasonsMice, Inbred BALB CPoliovirus Vaccine, InactivatedChadDiphtheriaInjections, IntradermalComplement C7Complement System ProteinsEnglandInjections, IntramuscularAnniversaries and Special EventsWalesAdministration, IntranasalCost-Benefit AnalysisDisease NotificationPertussis VaccineHaemophilus influenzae type b