According to Mayo Clinic, people get tuberculosis by coming into contact with bacteria in extremely tiny airborne droplets spread by people with active, untreated tuberculosis. Contact may occur through infected people coughing, sneezing, speaking, laughing or singing; however, tuberculosis is not easily transmitted.
According to Mayo Clinic, an individual is more likely to catch tuberculosis from someone he lives with than from a co-worker or stranger. Most people with active tuberculosis receiving the appropriate effective treatment for a minimum of two weeks are no longer contagious; however, some tuberculosis bacteria have become resistant to the most frequently used treatments, such as isoniazid and rifampin. Human immunodeficiency virus has greatly increased the occurrence of tuberculosis due to the body's resultant diminished ability to fight tuberculosis bacteria.