Tuberculosis is caused by bacteria, according to Mayo Clinic. Spread when an infected person coughs, sneezes or speaks and releases droplets into the air, tuberculosis is contagious. It is not easily transmittable from p... More » Health Conditions & Diseases

Tuberculosis is a bacterial infection that can spread throughout the body from the lymph nodes and through the bloodstream, according to WebMD. If it becomes symptomatic, tuberculosis can kill the tissue of infected orga... More » Health Conditions & Diseases

Some of the most common symptoms of tuberculosis (TB) include a cough that lasts more than 3 weeks, a painful sensation in the chest and coughing up blood or sputum from the chest. Tuberculosis is caused by a bacteria an... More » Health Conditions & Diseases

Mycobacterium tuberculosis is a rod-shaped, immobile bacteria, says Kenneth Todar of Todar's Online Textbook of Bacteriology. It thrives only in the presence of oxygen and is an intracellular parasite. More »

Bacillus anthracis, Clostridium botulinum, Vibrio Cholerae, Staphylococcus aureus and Mycobacterium tuberculosis are among the most harmful known bacteria, according to the National Academies of Sciences, Engineering and... More » Health Conditions & Diseases

Some lung infections that may caused by bacteria are pneumonia and tuberculosis, states WebMD. Pneumonia affects the alveoli, or air sacs, in the lungs, and tuberculosis is a contagious disease that may be spread from pe... More » Health Conditions & Diseases

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 c... More » Health Conditions & Diseases