Influenza A virusInfluenza, HumanInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesInfluenza A Virus, H3N2 SubtypeInfluenza B virusInfluenza in BirdsInfluenza A Virus, H5N1 SubtypeHemagglutinin Glycoproteins, Influenza VirusOrthomyxoviridaeOrthomyxoviridae InfectionsVirus ReplicationRNA VirusesVaccinia virusHemagglutination Inhibition TestsVirus CultivationNeuraminidasePandemicsDisease OutbreaksReceptors, VirusVirus SheddingInfluenza A Virus, H9N2 SubtypeInfluenza A Virus, H7N7 SubtypeHemagglutinins, ViralAntibodies, ViralRNA, ViralInfluenza A Virus, H3N8 SubtypeAntigens, ViralViral ProteinsMolecular Sequence DataInfluenza A Virus, H2N2 SubtypeSequence Analysis, DNAAntiviral AgentsPhylogenyInfluenza A Virus, H5N2 SubtypeVirulenceGenes, ViralCell LineSpecies SpecificityReassortant VirusesInfluenza A Virus, H7N9 SubtypeOseltamivirVirus DiseasesBirdsMeasles virusDefective VirusesVirus AssemblyRabies virusVaccinationAmino Acid SequenceNeutralization TestsPlant VirusesSimian virus 40Sindbis VirusVaccines, AttenuatedSeasonsVaccines, InactivatedDucksDNA VirusesInfluenza A Virus, H1N2 SubtypeVero CellsCercopithecus aethiopsViral Plaque AssayRespiratory Syncytial VirusesAmantadineDogsDNA, ViralWest Nile virusMadin Darby Canine Kidney CellsPolymerase Chain ReactionCross ReactionsMumps virusChickensPoultryVirionHepatitis B virusGenetic VariationRecombination, GeneticInfluenzavirus CSwineVesicular stomatitis Indiana virusCross ProtectionViral Core ProteinsNucleoproteinsMutationSimian immunodeficiency virusCytopathogenic Effect, ViralHepatitis A virusVirus AttachmentVirologyChick EmbryoZanamivirMice, Inbred StrainsVirus ActivationRNA ReplicasePlasmidsGenome, ViralSwine DiseasesViral Matrix ProteinsGenotype