Coupon Accepted Successfully!



A German scientist Robert Koch first discovered tuberculosis in 1882. Tuberculosis (T. B.) is an infectious disease that is communicated from one person to another directly or indirectly. T. B. is caused by a bacterium-called Mycobacterium tuberculosis. The bacterium releases a toxin tuberculin. T. B. affects lungs, lymph, intestine, glands, bones etc. In human beings the infection spreads through coughing, sneezing, talking and spitting by the patient. The incubation period for T. B. includes few weeks to few years.


The patient of tuberculosis feels sick and weak. There is also a loss of appetite and weight. Typical fever pain and night sweats are also common.

Sites of Infection
The following are two specific sites for pulmonary infection:

1. Lung or Pulmonary T. B
The person suffering with pulmonary T. B. has continuous fever, persistent cough and produces blood stained sputum. There is loss of weight and weakness. Chest pain and breathlessness are common features of patients with lung T. B.


2. Lymph Gland T. B
Symptoms of lymph gland T. B include swelling and tenderness of lymph gland, often in the leg that may discharge secretion through the skin.

Other than these two sites recent studies have shown that the bacteria may infect the bones, and intestine. 


1. Vigorous public health measures are the best methods of prevention.

2. Isolation and proper rehabilitation of the patient.

3. Avoidance of overcrowding, provision of good ventilation.

4. Immunisation with Bacille Calmette-Guerin (BCG) vaccine prevents tuberculosis. 

This vaccination gives the patient immunity for 3-4 years.

Test Your Skills Now!
Take a Quiz now
Reviewer Name