Defective VirusesViral InterferenceInfluenza A virusInfluenza, HumanMurine Acquired Immunodeficiency SyndromeInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesHemagglutinin Glycoproteins, Influenza VirusInfluenza A Virus, H5N1 SubtypeVirus ReplicationInfluenza A Virus, H3N2 SubtypeInfluenza in BirdsOrthomyxoviridaeOrthomyxoviridae InfectionsInfluenza B virusVesicular stomatitis Indiana virusRNA, ViralHelper VirusesViral ProteinsCell LineGenes, ViralNeuraminidaseVaccinia virusVirus DiseasesDNA, ViralVirus SheddingRNA VirusesHemagglutinins, ViralAntibodies, ViralHemagglutination Inhibition TestsMolecular Sequence DataReceptors, VirusVirus CultivationLeukemia Virus, MurineInfluenza A Virus, H9N2 SubtypeParticle SizeViral Plaque AssayRabies virusReassortant VirusesInfluenza A Virus, H3N8 SubtypeVaccinationVesiculovirusBirdsInfluenza A Virus, H7N7 SubtypeVaccines, AttenuatedPandemicsVaccines, SyntheticAntigens, ViralVirus AssemblyVaccines, InactivatedAntiviral AgentsBase SequenceGenome, ViralDucksInfluenza A Virus, H5N2 SubtypeMice, Inbred BALB COseltamivirSimian virus 40CricetinaeNeutralization TestsFerretsDisease OutbreaksInfluenza A Virus, H2N2 SubtypePlant VirusesVirionInfluenza A Virus, H1N2 SubtypeMadin Darby Canine Kidney CellsVaccines, DNADogsCross ProtectionDNA VirusesInfluenza A Virus, H7N9 SubtypeImmunizationSindbis VirusMeasles virusRespiratory Syncytial VirusesPhylogenyGenetic Complementation TestAdministration, IntranasalAntibodies, NeutralizingCercopithecus aethiopsChickensVero CellsPoultryMutationAmino Acid SequenceNucleoproteinsVirulenceStomatitisDisease Models, AnimalLungGenetic VectorsHepatitis B virusCross ReactionsViral Core ProteinsWest Nile virusSwine DiseasesSeasonsAmantadineViral Matrix Proteins