CoinfectionAquabirnavirusPneumocystis InfectionsVirusesAmericasIxodesHIV InfectionsVirus DiseasesRespiratory Tract InfectionsHepatitis BHepatitis CPolymerase Chain ReactionHTLV-II InfectionsMycoplasma InfectionsPrevalenceKiller Cells, NaturalHTLV-I InfectionsLeprosyAIDS-Related Opportunistic InfectionsViral LoadRNA, ViralDNA, ViralHIV-1Molecular Sequence DataSequence Analysis, DNAVirus ReplicationInfluenza, HumanSpecies SpecificityPhylogenyInfant, NewbornGenotypeSensitivity and SpecificityRisk FactorsBiological ProductsNatural Language ProcessingNatural Killer T-CellsConservation of Natural ResourcesCytotoxicity, ImmunologicNatural HistorySelection, GeneticNatural Cytotoxicity Triggering Receptor 1Genetic VariationReceptors, Natural Killer CellNatureEcosystemBase SequenceMolecular StructureAmino Acid SequenceGas, NaturalBiological EvolutionTime FactorsNatural Cytotoxicity Triggering Receptor 3Antigens, CD56Natural Orifice Endoscopic SurgeryImmunity, InnateNatural Cytotoxicity Triggering Receptor 2PhenotypeMutationEvolution, MolecularEnvironmentStereoisomerismLymphocyte Activation