Tuberculin TestTuberculinBCG VaccineTuberculosisLatent TuberculosisTuberculosis, PulmonaryHypersensitivity, DelayedInterferon-gamma Release TestsTuberculosis, BovineMycobacterium tuberculosisMycobacterium bovisSkin TestsInterferon-gammaImmunologic TestsContact TracingAntigens, BacterialMass Chest X-RayIsoniazidTuberculosis, CutaneousSensitivity and SpecificityAntitubercular AgentsCell Migration InhibitionIntradermal TestsLiberiaReagent Kits, DiagnosticTransfer FactorMass ScreeningHistoryMycobacteriumMycobacterium scrofulaceumInfectious Disease Transmission, Patient-to-ProfessionalGuinea PigsMycobacterium InfectionsImmunity, CellularDrug IncompatibilityLeukocyte Migration-Inhibitory FactorsAllergy and ImmunologyEmigration and ImmigrationHealth PersonnelLeprosyFalse Positive ReactionsTuberculosis, OcularSkinSilicotuberculosisTuberculomaCzechoslovakiaPrevalenceCell Migration Assays, LeukocyteT-LymphocytesEnzyme-Linked Immunosorbent AssayLymphadenitisEthiopiaHematologic TestsLymphocytesSurface-Active AgentsPersonnel, HospitalTuberculosis, Central Nervous SystemLymphocyte ActivationMycobacterium fortuitumTime FactorsCattleTuberculosis VaccinesRisk FactorsKwashiorkorVaccinationProspective StudiesClonal AnergyHIV InfectionsArthus ReactionIncidenceFlocculation TestsMycobacterium kansasiiFalse Negative ReactionsHistoplasminStudents, NursingMycobacterium lepraeMycobacterium haemophilumEndemic Diseases