Active tuberculosis (TB)
Active disease caused by Mycobacterium tuberculosis, as evidenced by a confirmatory culture, or, in the absence of culture, suggestive clinical symptoms, including productive cough lasting >3 weeks, chest pain, hemoptysis, fever, night sweats, weight loss, and easy fatigability. Active TB is a communicable disease that is treatable, curable, and preventable. Persons with active TB disease should be under the care of a health care provider. Active TB disease may indicate immune deficiency. For people with HIV, active TB disease is considered an opportunistic infection and a qualifying condition for an AIDS diagnosis.