Respiratory Syncytial Virus InfectionsRespiratory Syncytial VirusesRespiratory Syncytial Virus, HumanRespirovirus InfectionsRespiratory Syncytial Virus, BovineRespiratory Syncytial Virus VaccinesBronchiolitis, ViralBronchiolitisHN ProteinRespiratory Tract InfectionsNasopharynxSigmodontinaePneumonia, ViralAntibodies, ViralLungAntigens, ViralVirus ReplicationViral Fusion ProteinsMice, Inbred BALB CMetapneumovirusNasal Lavage FluidViral ProteinsInfant, NewbornBronchopneumoniaAntiviral AgentsAlcian BluePeriodic Acid-Schiff ReactionViral Envelope ProteinsNoseArvicolinaeRibavirinNasal MucosaNeutralization TestsCattle DiseasesVirus DiseasesSeasonsCell LineParamyxoviridae InfectionsImmunoglobulins, IntravenousFluorescent Antibody TechniqueEnzyme-Linked Immunosorbent AssayCytokinesAerosolsBronchoalveolar Lavage FluidInfluenza, HumanRespiratory SoundsImmunoglobulin GHospitalizationEpithelial CellsParainfluenza Virus 3, HumanRespiratory SystemViral LoadMucusInterferon-gammaAntibodies, MonoclonalVaccinia virusRNA, ViralVirus CultivationRNA VirusesDisease Models, AnimalTime FactorsCattleVero CellsCD8-Positive T-LymphocytesRespiratory MucosaReverse Transcriptase Polymerase Chain ReactionAcute DiseaseBronchial HyperreactivityImmunoglobulin ASpecific Pathogen-Free OrganismsTh2 CellsMolecular Sequence DataCercopithecus aethiopsImmunization, PassiveInterleukin-13RespirovirusCells, CulturedChemokinesMurine pneumonia virusViral VaccinesOrthomyxoviridaeVirusesBronchiRNA, MessengerVirus SheddingAntibodies, Monoclonal, HumanizedViral Plaque AssayCytopathogenic Effect, ViralParainfluenza Virus 3, BovinePneumovirus InfectionsSeverity of Illness IndexInfluenza A Virus, H1N1 SubtypeCD4-Positive T-LymphocytesVirologyAmino Acid SequenceParainfluenza Virus 1, HumanGene Expression RegulationRisk FactorsPneumovirusOrthomyxoviridae Infections