A small number of tubercle bacill enter the bloodstream and spread throughout the body. The bacilli may reach any part of the body, including areas where TB disease is more likely to develop (such as the lungs, kidneys, brain or bone).
CDC - Department of Health and Human Services. Core Curriculum on Tuberculosis: What the Clinician Should Know. Chapter 2: Transmission and Pathogenesis of TB. September 28, 2011. Powerpoint file.
