Tuberculosis is a bacterial infection, most commonly affects the lungs, caused by Mycobacterium tuberculosis (Koch's bacillus) bacteria. These are some common sign and symptoms of tuberculosis (TB) in patients such as tiredness, headache, weight loss, fever, night sweats loss of appetite, voice hoarseness, haemoptysis, dry or productive cough etc. Tuberculosis (TB) is a contagious airborne disease affecting the lungs and other organs. Reviewed by a board-certified infectious disease healthcare provider. Tuberculosis is mostly curable but without proper treatment about two thirds of people who get TB will die. Since 2000, about 79 million lives have been saved through effective diagnosis and treatment. Most people who have TB disease can be cured with a course of 4 antimicrobials lasting 6 months, or even 4 months in some cases. Information, supervision and patient support by a health worker or trained volunteer are key to a successful outcome. Tuberculosis (TB) is an illness caused by a bacterial infection. It commonly affects your lungs, but it can also affect other areas of your body like your spine, brain or kidneys.