Kidney TransplantationPolyomavirus InfectionsGraft SurvivalGraft RejectionLiver TransplantationTransplantation, HomologousKidneyPolyomavirusTissue DonorsImmunosuppressive AgentsLiving DonorsKidney Failure, ChronicTumor Virus InfectionsBK VirusKidney DiseasesPancreas TransplantationDelayed Graft FunctionBone Marrow TransplantationTissue and Organ ProcurementJC VirusPolyomaviridaeCadaverBlood Group IncompatibilityHeart TransplantationHematopoietic Stem Cell TransplantationTime FactorsWaiting ListsLung TransplantationTransplantation, AutologousTreatment OutcomeRetrospective StudiesSimian virus 40ImmunosuppressionTacrolimusOrgan TransplantationTransplantation ConditioningDNA, ViralMycophenolic AcidTransplantation ImmunologyStem Cell TransplantationRNA VirusesHistocompatibility TestingVirus ReplicationTransplantationPostoperative ComplicationsCyclosporineDonor SelectionIslets of Langerhans TransplantationUrineABO Blood-Group SystemVaccinia virusFollow-Up StudiesCystitisKidney Function TestsRenal DialysisReceptors, VirusTransplantation, IsogeneicBiopsyRisk FactorsCreatinineVirus CultivationPolymerase Chain ReactionCell TransplantationGenes, ViralOrgan PreservationVirus DiseasesIsoantibodiesKidney TubulesAntigens, ViralTransplantation ChimeraVirus SheddingSurvival RateGlomerular Filtration RateTransplantation ToleranceTransplantsHLA AntigensHistocompatibilityPlasmapheresisSurvival AnalysisAntilymphocyte SerumVirus AssemblyAntiviral AgentsPlant VirusesDirected Tissue DonationProspective StudiesCell LineDNA VirusesDefective VirusesGraft vs Host DiseaseAcute Kidney InjuryLiver FailureRenal InsufficiencyTransplantation, HeterotopicIncidenceSindbis VirusMeasles virusRecurrenceViremiaInfluenza A Virus, H1N1 SubtypeCord Blood Stem Cell Transplantation