Placebo EffectDouble-Blind MethodCross-Over StudiesPlacebosAdministration, IntranasalAdministration, OralNasal MucosaMice, Inbred BALB CDrug Administration ScheduleInjections, IntravenousDose-Response Relationship, DrugTime FactorsLungDrug Administration RoutesTreatment OutcomeInjections, IntramuscularDisease Models, AnimalImmunity, MucosalMice, Inbred C57BLUnited States Food and Drug AdministrationInjections, SubcutaneousAdjuvants, ImmunologicRats, Sprague-DawleyImmunizationInjections, IntraperitonealNasal CavityAdministration, RectalAdministration, InhalationBiological AvailabilityAdministration, TopicalRats, WistarNasal SpraysVaccinationOrthomyxoviridae InfectionsNoseDrug Therapy, CombinationAdministration, CutaneousVaccines, AttenuatedImmunoglobulin AVaccines, SyntheticImmunoglobulin GInfusions, IntravenousAntibodies, ViralArea Under CurveRandom AllocationVaccines, Inactivated