What is TB ?


Tuberculosis (TB) is an infectious disease caused by a special type of bacteria, called Mycobacterium tuberculosis. The bacilli or TB germs causing tuberculosis are also called 'tubercle' bacilli or  'acid fast bacilli' (AFB) for they retain dye to appear as red rods (microscopically) after decolourization with acid and alcohol. 

If the spread of the disease is not checked, it can seriously affect the working of that particular organ, ultimately leading to total disruption of its functions, which may finally result in the death of the patient.

The organs which can get affected include lungs, lymph nodes, meninges, intestines, bones and joints.

  Which is the most common organ to be affected by TB ?

  Lymph node
 
Lung
 
Intestine

 

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