Tuberculosis

Tuberculosis (TB in short) is caused by bacteria (Mycobacterium tuberculosis) which usually affects the lungs. It is curable disease. TB can be transmitted through air when people cough, sneeze or spit. This causes the TB microbes to dispel into the air. Inhalation of this air causes a person to become infected.
It has been estimated by WHO that a quarter of world's population is infected by TB bacteria but are not ill with the disease and cannot transmit it. 
==Symptoms==
Commons symptoms are cough with sputum and blood, chest pains, weakness, weight loss, fever and night sweats.
==Treatment==
TB is treatable and a curable disease. There is a standard 6-month corse of 4 antimicrobial drugs for active, drug-susceptible TB disease.
==Types==
*Latent TB. The immune system suppresses the germs in the body and there are no symptoms and the person is not contagious. The infection, however, is alive and susceptible to becoem active in future.
*Active TB. The disease is active and spreading rapidly. The person is contagious.
Category:Disease