http://www.cdc.gov/tb/pubs/pamphlets/getthefacts_eng.htm
This document also available in Spanish
National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention
Tuberculosis (TB) is a disease that usually affects the lungs. This fact sheet provides basic information about TB, including transmission modes, symptoms, spreading, and testing. The fact sheet also discusses who gets TB disease as well as the difference between TB disease and TB infection.