Influenza, HumanInfluenza A virusInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesInfluenza A Virus, H3N2 SubtypeInfluenza B virusInfluenza in BirdsInfluenza A Virus, H5N1 SubtypeHemagglutinin Glycoproteins, Influenza VirusOrthomyxoviridaeOrthomyxoviridae InfectionsPandemicsNeuraminidaseHemagglutination Inhibition TestsInfluenza A Virus, H7N3 SubtypeOseltamivirAntibodies, ViralCross ProtectionDisease OutbreaksReassortant VirusesVaccines, InactivatedBirdsDrug Resistance, MicrobialDrug ResistanceHemagglutinins, ViralAmantadineDrug Resistance, BacterialZanamivirDrug Resistance, ViralSeasonsAntiviral AgentsInfluenza A Virus, H9N2 SubtypeVaccinationHemagglutininsCross ReactionsInfluenza A Virus, H3N8 SubtypeVaccines, AttenuatedSpecies SpecificityMolecular Sequence DataAntigens, ViralDogsInfluenza A Virus, H2N2 SubtypeDrug Resistance, NeoplasmMice, Inbred BALB CInfluenza A Virus, H7N7 SubtypePhylogenyAnti-Bacterial AgentsMicrobial Sensitivity TestsDrug Resistance, MultipleFerretsSequence Analysis, DNAMutationDisease ResistanceInfluenza A Virus, H5N2 SubtypeInfluenza A Virus, H7N9 SubtypeViral ProteinsCell LineVascular ResistanceDrug Resistance, Multiple, BacterialVirulenceEscherichia coliAmino Acid SequenceInfluenza A Virus, H1N2 SubtypeGenes, BacterialPoultryDNA, BacterialPlasmidsPhenotypeMadin Darby Canine Kidney CellsPolymerase Chain ReactionMice, Inbred StrainsDucksPenicillin ResistanceBacterial ProteinsVirus ReplicationTetracycline ResistancePlant DiseasesBase SequenceGenotypeRNA, Ribosomal, 16STime FactorsBacterial Typing TechniquesRNA, ViralViral Matrix ProteinsRimantadineInfluenzavirus CDNA, RibosomalLungImmunity, InnateChickensDrug Resistance, FungalSentinel SurveillanceReverse Transcriptase Polymerase Chain ReactionGenetic VariationSwineSerotypingPneumonia, ViralPopulation SurveillanceInfluenzavirus ACulture Media