What is TB? Learn more about tuberculosis causes, symptoms, treatment, prevention and diagnosis and discover how this deadly infectious disease spreads.

Diagnosing tuberculosis

A small amount of testing fluid, called tuberculin or PPD, is injected beneath the skin of your lower arm. You are told within three days whether the test reaction was positive.

What causes tuberculosis?

TB is caused by the bacterium Mycobacterium tuberculosis. TB can be infectious, i.e. the bacteria can be spread to other people.

How TB progresses

TB bacteria become active if the immune system can't stop their growth; they multiply and cause disease. Without the correct treatment people may become seriously ill and even die.

Treating tuberculosis

People with active TB are usually treated with several anti-TB drugs. Daily oral doses are continued for six months.

Symptoms of tuberculosis

Symptoms of TB may include: a cough that starts out dry but later produces sputum, chest pain, weakness or fatigue, chills and fevers.

What is tuberculosis?

Tuberculosis or TB is a chronic infectious disease caused by bacteria which usually attack the lungs (pulmonary TB). The bacteria can destroy parts of the lungs.

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