http://www.cdc.gov/nchstp/tb/pubs/tbfactsheets/250010.htm
National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention
Tuberculosis (TB) is a disease caused by germs that are spread from person to person through the air. This fact sheet provides basic information about TB, including symptoms, transmission modes, testing, and treatment. The fact sheet also discusses the difference between latent TB infection and TB disease.