TB--it can threaten your future.
D006679:HIV Seropositivity; D006801:Humans; D009726:Nurses; D009784:Occupational Diseases / Q000175:diagnosis / Q000517:prevention & control; D012882:Skin Tests; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis / Q000517:prevention & control / Q000635:transmission*