Cytomegalovirus InfectionsCytomegalovirusMuromegalovirusGanciclovirCytomegalovirus RetinitisCytomegalovirus VaccinesHerpesviridae InfectionsAntiviral AgentsAntibodies, ViralFoscarnetDNA, ViralImmediate-Early ProteinsImmunocompetenceAntigens, ViralPregnancy Complications, InfectiousVirus ReplicationViral ProteinsKidney TransplantationVirus ActivationRoseolovirusViral Matrix ProteinsFibroblastsImmunocompromised HostGastritis, HypertrophicImmunoglobulin MPolymerase Chain ReactionOpportunistic InfectionsInfant, NewbornTransplantation, HomologousGenes, Immediate-EarlySalivary GlandsViremiaFetal DiseasesUrineInfectious Disease Transmission, VerticalComplement Fixation TestsCells, CulturedOrgan TransplantationGene Expression Regulation, ViralImmunoglobulin GPneumonia, ViralAIDS-Related Opportunistic InfectionsPregnancyRibonucleosidesMice, Inbred BALB CHerpesvirus 6, HumanCell LineKiller Cells, NaturalViral Plaque AssayBone Marrow TransplantationAcyclovirViral LoadViral Envelope ProteinsImmunosuppressionTime FactorsInfant, Newborn, DiseasesGraft RejectionCytopathogenic Effect, ViralSpleenGenes, ViralCytosineOrganophosphonatesPostoperative ComplicationsInclusion Bodies, ViralNK Cell Lectin-Like Receptor Subfamily AImmunity, CellularMolecular Sequence DataPhosphoproteinsLiver TransplantationVirus LatencyTransplantationImmunosuppressive AgentsCD8-Positive T-LymphocytesNeonatal ScreeningLung TransplantationVirologyHypoproteinemiaHearing Loss, SensorineuralBase SequenceSerologic TestsLymphotoxin alpha1, beta2 HeterotrimerHeart TransplantationOrganophosphorus CompoundsAcquired Immunodeficiency SyndromeRoseolovirus InfectionsTissue DonorsChild CareHearing Loss, CentralEnzyme-Linked Immunosorbent AssayMice, Inbred C57BLLymphocyte ActivationProspective StudiesAcute DiseaseFluorescent Antibody TechniqueHematopoietic Stem Cell TransplantationTransplantsVirus CultivationRetrospective StudiesHerpesviridaeT-Lymphocytes