Respiratory Syncytial Virus InfectionsRespiratory Syncytial VirusesRespiratory Syncytial Virus, HumanRespirovirus InfectionsRespiratory Syncytial Virus, BovineMeaslesRespiratory Syncytial Virus VaccinesBronchiolitis, ViralMeasles virusMeasles VaccineBronchiolitisHN ProteinRespiratory Tract InfectionsNasopharynxAntibodies, ViralSigmodontinaePneumonia, ViralLungAntigens, ViralVirus ReplicationViral Fusion ProteinsMice, Inbred BALB CMetapneumovirusNasal Lavage FluidViral ProteinsInfant, NewbornBronchopneumoniaAntiviral AgentsAlcian BluePeriodic Acid-Schiff ReactionViral Envelope ProteinsNeutralization TestsNoseArvicolinaeRibavirinNasal MucosaCattle DiseasesCell LineVirus DiseasesSeasonsParamyxoviridae InfectionsImmunoglobulins, IntravenousFluorescent Antibody TechniqueEnzyme-Linked Immunosorbent AssayCytokinesAerosolsImmunoglobulin GBronchoalveolar Lavage FluidInfluenza, HumanHospitalizationRespiratory SoundsEpithelial CellsParainfluenza Virus 3, HumanRNA, ViralRespiratory SystemInterferon-gammaViral LoadAntibodies, MonoclonalVero CellsVaccinia virusMucusVirus CultivationDisease Models, AnimalRNA VirusesTime FactorsCattleCercopithecus aethiopsCD8-Positive T-LymphocytesReverse Transcriptase Polymerase Chain ReactionAcute DiseaseRespiratory MucosaBronchial HyperreactivityMolecular Sequence DataImmunoglobulin ASpecific Pathogen-Free OrganismsTh2 CellsImmunization, PassiveRespirovirusCells, CulturedInterleukin-13Viral VaccinesChemokinesMurine pneumonia virusOrthomyxoviridaeVirusesDisease OutbreaksBronchiVirus SheddingCytopathogenic Effect, ViralRNA, MessengerViral Plaque AssayAntibodies, Monoclonal, HumanizedParainfluenza Virus 3, BovineReceptors, VirusPneumovirus InfectionsVaccines, AttenuatedSeverity of Illness IndexInfluenza A Virus, H1N1 SubtypeCD4-Positive T-LymphocytesVaccination