Influenza, HumanInfluenza B virusInfluenza A virusInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesInfluenza A Virus, H3N2 SubtypeAntiviral AgentsInfluenza in BirdsSeasonsInfluenza A Virus, H5N1 SubtypePopulation SurveillanceOrthomyxoviridaeHemagglutinin Glycoproteins, Influenza VirusPandemicsDisease OutbreaksOrthomyxoviridae InfectionsOutpatientsDrug Resistance, ViralUnited StatesSentinel SurveillanceVirus ReplicationWorld HealthInfluenza A Virus, H9N2 SubtypeHospitalizationOseltamivirNeuraminidaseInfluenza A Virus, H3N8 SubtypeVaccinationPneumoniaInfluenza A Virus, H7N7 SubtypeHemagglutination Inhibition TestsInfluenza A Virus, H2N2 SubtypeAntigens, ViralAmantadineHemagglutinins, ViralRimantadineInfluenza A Virus, H5N2 SubtypeInfluenza A Virus, H7N9 SubtypeVirus DiseasesZanamivirAntibodies, ViralPostoperative ComplicationsRNA, ViralRNA VirusesVaccinia virusCell LineVirus SheddingViral ProteinsBirdsTime FactorsVirus CultivationViral Plaque AssayInfluenza A Virus, H1N2 SubtypeReceptors, VirusReassortant VirusesInfant, NewbornIncidenceDisease NotificationAcyclovirVaccines, InactivatedMolecular Sequence DataOrganophosphonatesDogsDucksVero CellsMadin Darby Canine Kidney CellsVirus AssemblyCercopithecus aethiopsEuropePoultryHepatitis B virusPyransTreatment OutcomePhylogenyRNA ReplicasePneumonia, ViralInfluenzavirus CHepacivirusDefective VirusesInterferonsAmino Acid SequenceGenes, ViralInfluenza A Virus, H7N3 SubtypeVaccines, AttenuatedSimian virus 40DNA VirusesVesicular stomatitis Indiana virusRibavirinViral Matrix ProteinsViral Nonstructural ProteinsCross ProtectionDNA, ViralSindbis VirusVirus ActivationPlant VirusesRespiratory Syncytial VirusesNeutralization TestsNucleoproteinsSimplexvirusMice, Inbred BALB C