LaboratoriesRNA VirusesVaccinia virusHospitals, TeachingReceptors, VirusVirus CultivationVirus ReplicationLaboratories, HospitalHospitals, GeneralHospitals, UniversityVirus SheddingVirus DiseasesSimian virus 40Virus AssemblyHospital CostsPlant VirusesDNA VirusesDefective VirusesInfluenza A Virus, H1N1 SubtypeClinical Laboratory TechniquesMeasles virusSindbis VirusRabies virusHospitals, UrbanNursing Staff, HospitalInfluenza A Virus, H5N1 SubtypeEconomics, HospitalHospitals, PediatricAnimals, LaboratoryHepatitis B virusInfluenza A Virus, H3N2 SubtypeWest Nile virusHospital Bed CapacityHospitals, DistrictRespiratory Syncytial VirusesHospitals, SpecialRNA, ViralVirus ActivationAntigens, ViralRetrospective StudiesHospitals, PrivateGenes, ViralTime FactorsMedical Laboratory PersonnelVesicular stomatitis Indiana virusFinancial Management, HospitalViral ProteinsVirus LatencyHemagglutinin Glycoproteins, Influenza VirusEmergency Service, HospitalLength of StayHospitalizationVero CellsOncogenic VirusesHospital ChargesHospital PlanningHospital DepartmentsSimian immunodeficiency virusCercopithecus aethiopsMumps virusVirionParainfluenza Virus 1, HumanAntiviral AgentsHospitals, PsychiatricMosaic VirusesPhylogenyHepatitis A virusNeutralization TestsPolymerase Chain ReactionMolecular Sequence DataHospital RecordsSemliki forest virusHospital UnitsViral Plaque AssayAvian Sarcoma VirusesTumor Virus InfectionsDNA, ViralBK VirusVirus AttachmentViruses, UnclassifiedJC VirusOrthomyxoviridaeCell LineDisease OutbreaksEquipment and Supplies, HospitalAvian leukosis virusClinical Laboratory Information SystemsHIV InfectionsBluetongue virusProspective StudiesOrthomyxoviridae InfectionsUnited StatesLibraries, HospitalGene Expression Regulation, ViralRespiratory Syncytial Virus InfectionsSendai virusMoloney murine leukemia virusVirus IntegrationInfant, NewbornSequence Analysis, DNA