infection without disease. + PPD, no symptoms, neg CXR, neg bacteriologic * Class III – Clinically active / disease. + PPD, sputum, symptomatic * Class IV – TB but not clinically active: + PPD, history of TB, asymptomatic * Class V – TB suspect, pending dx no more than three months * Reactivation of LTBI * 10 – 20 years after infection, includes 90% of non-HIV adult cases * Medication (Immunosuppressant) * Cancer, HIV, ESDR (End Stage Renal Disease), untx. Class III…
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