Influenza A virusInfluenza, HumanInfluenza VaccinesInfluenza A Virus, H1N1 SubtypeInfluenza in BirdsInfluenza B virusInfluenza A Virus, H3N2 SubtypeInfluenza A Virus, H5N1 SubtypeHemagglutinin Glycoproteins, Influenza VirusRNAOrthomyxoviridaeOrthomyxoviridae InfectionsRNA, ViralRNA, Small InterferingInfluenza A Virus, H9N2 SubtypePandemicsInfluenza A Virus, H3N8 SubtypeRNA SplicingRNA EditingInfluenza A Virus, H2N2 SubtypeNeuraminidaseInfluenza A Virus, H7N7 SubtypeHemagglutination Inhibition TestsRNA, RibosomalDisease OutbreaksOseltamivirInfluenza A Virus, H5N2 SubtypeHemagglutinins, ViralInfluenza A Virus, H7N9 SubtypeRNA, BacterialDNA-Directed RNA PolymerasesSeasonsReassortant VirusesBirdsAntibodies, ViralRNA VirusesVaccinationRNA, MessengerInfluenza A Virus, H1N2 SubtypeRNA InterferenceAntiviral AgentsRNA, Double-StrandedVaccines, InactivatedZanamivirAmantadineMolecular Sequence DataMadin Darby Canine Kidney CellsVirus ReplicationRNA, CatalyticRNA Polymerase IIRNA FoldingPoultryDucksCell LineDogsRNA, FungalInfluenzavirus CViral Matrix ProteinsBase SequenceRNA HelicasesRNA StabilityRimantadineRNA, AntisenseRNA Processing, Post-TranscriptionalInfluenza A Virus, H7N3 SubtypeRNA CapsCross ProtectionRNA, TransferInfluenzavirus ANucleic Acid ConformationPneumonia, ViralRNA PrecursorsSentinel SurveillanceAntigens, ViralNucleoproteinsRNA, Small NuclearSequence Analysis, RNAAmino Acid SequenceRNA, UntranslatedVaccines, AttenuatedAnseriformesPhylogenyVirus SheddingViral ProteinsHemagglutininsInfluenza A Virus, H7N1 SubtypePopulation SurveillanceMice, Inbred BALB CLungChickensRNA-Binding ProteinsViral Nonstructural ProteinsRNA, PlantDEAD-box RNA HelicasesReverse Transcriptase Polymerase Chain ReactionRNA, ProtozoanMutationPyransVirologyGenome, Viral