Overview of Tuberculosis

Tuberculosis (TB) is a chronic infectious disease caused by the infection of Mycobacterium tuberculosis (Mtb) which spreads via respiratory tract. Lungs are the most commonly infected human organ whose infection accounts for above 80% of tuberculosis. Therefore, TB is also known as pulmonary TB [1]. There had been a long history of TB before its pathogenesis, spreading routes, treatment, and prevention of TB have been elucidated.