Sandbox/Alejandro

Tuberculin Rection	Considered a Positive Result in:
≥ 5 mm	HIV-positive person Recent contacts of TB case Persons with nodular or fibrotic changes on CXR consistent with old healed TB Patients with organ transplants and other immunosuppressed patients
≥ 10 mm	Recent arrivals (less than 5 years) from high-prevalent countries Injection drug users Residents and employees of high-risk congregate settings (e.g., prisons, nursing homes, hospitals, homeless shelters, etc.) Mycobacteriology lab personnel Persons with clinical conditions that place them at high risk (e.g., diabetes, prolonged corticosteroid therapy, leukemia, end-stage renal disease, chronic malabsorption syndromes, low body weight, etc) Children less than 4 years of age, or children and adolescents exposed to adults in high-risk categories
≥ 15 mm	Persons with no known risk factors for TB