GenotypeHepacivirusHepatitis B virusPhylogenyHepatitis CRNA, ViralAntiviral AgentsRNA VirusesRibavirinSequence Analysis, DNAMolecular Sequence DataVirus ReplicationVaccinia virusHepatitis C, ChronicHepatitis BHepatitis E virusMeasles virusDNA, ViralGenetic VariationReceptors, VirusInterferon-alphaVirus CultivationPolymerase Chain ReactionHepatitis EVirus SheddingMolecular EpidemiologyVirus DiseasesPolyethylene GlycolsSimian virus 40Genes, ViralHepatitis B, ChronicVirus AssemblyPlant VirusesDNA VirusesMumps virusDefective VirusesHepatitis B Surface AntigensViral Nonstructural ProteinsViral LoadSindbis VirusInfluenza A Virus, H1N1 SubtypeGenome, ViralViral Core ProteinsRabies virusInfluenza A Virus, H5N1 SubtypeViral ProteinsHepatitis Delta VirusAntigens, ViralPolymorphism, GeneticInfluenza A Virus, H3N2 SubtypeHepatitis B e AntigensWest Nile virus5' Untranslated RegionsRespiratory Syncytial VirusesHepatitis C AntibodiesAmino Acid SequenceChinaRecombinant ProteinsVirus ActivationHepatitis A Virus, HumanVirologyHepatitis DSequence HomologyCell LineBlood DonorsPolymorphism, Restriction Fragment LengthVirulenceVesicular stomatitis Indiana virusDrug Resistance, ViralBase SequenceLuxembourgHemagglutinin Glycoproteins, Influenza VirusRecombination, GeneticVirus LatencyEgyptPakistanVero CellsDNA PrimersOncogenic VirusesDrug Therapy, CombinationSimian immunodeficiency virusAmino Acid SubstitutionReverse Transcriptase Polymerase Chain ReactionHemorrhagic Septicemia, ViralNovirhabdovirusCercopithecus aethiopsMutationHepatitis A virusVirionDisease OutbreaksEvolution, MolecularGuineaParainfluenza Virus 1, HumanMosaic VirusesPrevalenceBrazilCluster AnalysisPolymorphism, Single NucleotideHIV InfectionsVenezuela