Hemagglutinin Glycoproteins, Influenza VirusInfluenza A virusInfluenza, HumanHemagglutinins, ViralHemagglutininsInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesOrthomyxoviridaeInfluenza in BirdsInfluenza A Virus, H3N2 SubtypeInfluenza A Virus, H5N1 SubtypeGlycoproteinsOrthomyxoviridae InfectionsInfluenza B virusNeuraminidaseHemagglutination Inhibition TestsInfluenza A Virus, H9N2 SubtypeAntibodies, ViralReassortant VirusesInfluenza A Virus, H3N8 SubtypeBirdsVirus ReplicationInfluenza A Virus, H7N7 SubtypeReceptors, VirusPandemicsViral ProteinsCell LineMolecular Sequence DataInfluenza A Virus, H2N2 SubtypeInfluenza A Virus, H5N2 SubtypeDucksVirus SheddingAntigens, ViralMadin Darby Canine Kidney CellsDogsFerretsOseltamivirVirus CultivationVaccinia virusAntiviral AgentsAmino Acid SequenceDisease OutbreaksRNA, ViralInfluenza A Virus, H1N2 SubtypeMeasles virusInfluenza A Virus, H7N9 SubtypeHemagglutination, ViralRNA VirusesChickensNeutralization TestsPoultryViral Matrix ProteinsVirus AssemblyVaccinationPhylogenyCross ReactionsHemagglutination TestsMice, Inbred BALB CCross ProtectionHemagglutinationVaccines, InactivatedGenes, ViralZanamivirSialic AcidsNucleoproteinsChick EmbryoAntibodies, NeutralizingN-Acetylneuraminic AcidEpitopesViral Fusion ProteinsAmantadineGlycosylationMembrane GlycoproteinsVirosomesMembrane FusionCercopithecus aethiopsVirus DiseasesVirulenceVaccines, Virus-Like ParticleVirus AttachmentViral Envelope ProteinsSeasonsAnseriformesVaccines, VirosomeVero CellsVaccines, AttenuatedSwineVirionViral Core ProteinsViral Plaque AssayDefective VirusesSwine DiseasesRNA ReplicasePoultry DiseasesLungSimian virus 40Pneumonia, ViralBromelainsHemadsorptionInfluenzavirus A