Acute DiseaseToxoplasmosisInfectionCD8-Positive T-LymphocytesChagas DiseaseChronic DiseaseVirus LatencyToxoplasmaViremiaLymphocytic choriomeningitis virusHerpesviridae InfectionsLymphocytic ChoriomeningitisToxoplasmosis, AnimalTrypanosoma cruziSimian Acquired Immunodeficiency SyndromeHIV InfectionsMice, Inbred C57BLVirus ActivationVirus ReplicationViral LoadSimian immunodeficiency virusTrigeminal GanglionCD4-Positive T-LymphocytesHIV-1Immunologic MemoryAntibodies, ViralImmunoglobulin MMice, Inbred BALB CGammaherpesvirinaeTime FactorsRNA, ViralConvalescenceParvovirus B19, HumanInterferon-gammaAntigens, ViralKwashiorkorParvoviridae InfectionsCoronavirus InfectionsImmunoglobulin GMacaca mulattaMuromegalovirusSpleenChlamydophila pneumoniaePseudomonas InfectionsDisease Models, AnimalHerpesvirus 1, BovineHepatitis CAntibodies, ProtozoanLymphocyte ActivationEnzyme-Linked Immunosorbent AssayHerpes SimplexRespiratory Tract InfectionsPichinde virusSerologic TestsPrevalenceRisk FactorsCommunicable DiseasesMolecular Sequence DataImmunity, InnateCentral Nervous System Viral DiseasesDNA, ViralVirus DiseasesVirulenceChagas CardiomyopathyPseudomonas aeruginosaEpitopes, T-LymphocyteT-LymphocytesT-Lymphocytes, CytotoxicDisease SusceptibilityArenaviridae InfectionsInfectious MononucleosisBacterial InfectionsCytokinesHepacivirusHost-Pathogen InteractionsCross-Sectional StudiesViral ProteinsImmunity, CellularBovine Virus Diarrhea-Mucosal DiseaseEncephalitis, ViralMice, KnockoutCell LineFeverAlphavirus InfectionsT-Lymphocyte SubsetsCattle DiseasesQuestionnairesHerpesvirus 1, HumanAntibodies, BacterialLassa virusBabesia bovisCells, CulturedPolymerase Chain ReactionCytomegalovirus InfectionsVero CellsMacacaImmunization, PassiveLymphocyte CountViral Plaque AssayAnaplasmosis