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buy custom Evidence-Based Pharmacology The Infectious Disease Tuberculosis (TB) Introduction In this assignment, Tuberculosis (TB) is reviewed. The infectious disease is caused by a bacterium known as Mycobacterium tubercuslosis that mostly affects the lungs (World Health Organization, 2015). The bacterium is transmitted from one person to another through droplets that originate from the throat or lungs of those who have the disease. Healthy people infected by the bacterium do not exhibit symptoms due to active immune system that guards against the disease. Ten percent of those who have latent TB develop active TB at some point in their lives (U.S. Department of Health and Human Services, 2010). Even though many people think that developed countries, such as the United States, do not have cases of TB, this assumption might not be true because the disease still remains a major killer in the world. Nearly one-third of the worlds population or 2 billion people are thought to be suffering from the disease (U.S. Department of Health and Human Services, 2010).