- Tuberculosis or TB is short form of tubercle bacillus.
- It is an infectious disease caused by various strains of mycobacteria.
- It is spread through the air when people who have an active TB infection cough, sneeze, or otherwise transmit their saliva through the air.
- One-third of the world's population is thought to have been infected with M. tuberculosis.
- General symptoms such as: fever, chills, night sweats, appetite loss, weight loss, fatigue, and finger clubbing may also occur.
- The bacillus causing tuberculosis, Mycobacterium tuberculosis, was identified and described on 24 March 1882 by Robert Koch. He received the Nobel Prize in physiology or medicine in 1905 for this discovery.
- People with weakened immune systems have a much greater risk of falling ill from TB.
- Individuals with HIV and Aids should be tested for tuberculosis, since the leading cause of death in the AIDS patient is tuberculosis.