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Health care

Of or pertaining to the prevention and treatment of illness, and the preservation of physical and mental well-being, through the services provided by medical professionals.

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Health care > Tuberculosis

positive sputum smear

Health care; Tuberculosis

AFB are visible on the sputum smear when viewed under a microscope. Persons with a sputum smear positive for AFB are considered more infectious than those with smear-negative ...


Health care; Tuberculosis

A first-line, injectable anti-TB drug.


Health care; Tuberculosis

Having symptoms that may indicate the presence of TB or another disease (see Asymptomatic).

TB case

Health care; Tuberculosis

A particular episode of clinically active TB. This term should be used only to refer to the disease itself, not the patient with the disease. By law, cases of TB must be reported ...

TB infection

Health care; Tuberculosis

A condition in which living tubercle bacilli are present in the body but the disease is not clinically active. Infected persons usually have positive tuberculin reactions, but ...


Health care; Tuberculosis

The spread of an infectious agent from one person to another. The likelihood of transmission is directly related to the duration and intensity of exposure to M. tuberculosis (see ...

treatment failures

Health care; Tuberculosis

TB disease in patients who do not respond to chemotherapy and in patients whose disease worsens after having improved initially.