Tuberculosis is caused by an infection with Mycobacterium tuberculosis, rod-shaped bacteria that are spread mostly through air-born droplets or dust micro-particles of dried sputum.Those who develop active pulmonary tuberculosis experience a range of signs and symptoms, including chest pain, cough, weight loss, pallor, fever, and night sweats. … More Raising Awareness about Tuberculosis – World TB Day, 24 March 2012 Pt. 1