Prevalence, Types and Treatment of Tuberculosis: A Review
Tuberculosis (TB) has reemerged as one of the main cause of death in human beings in recent years. TB is caused by a group of species called Mycobacterium tuberculosis complex, and it causes three million deaths each year around the world. In 2010, the global estimated incidence of TB was about 8.0 million. The number of deaths from TB among HIV-negative patients was 1.0 million while the number of deaths among the HIV-positive TB was about 0.40 million. The higher incident and elevation of MDR cases demand efforts to shift focus to various control strategies against TB. According to WHO, in 2014 magnitude of TB was recorded as 126 positive cases per 0.1 million population in the world. Pakistan ranks fourth in high TB burden countries where each year approximately 297,000 TB cases are reported. Tuberculosis can be comprehensively grouped into two main types; pulmonary and extra pulmonary tuberculosis. Pulmonary tuberculosis affects the lungs and is most common type of TB. In 15 to 20 % cases of the active TB, the infection spreads from lungs to different parts of the body. This condition is called extra-pulmonary tuberculosis. Different treatment regimens are available for tuberculosis.