Final answer:
Tuberculosis (TB) is a chronic bacterial disease caused by Mycobacterium tuberculosis that can affect the lungs as well as other organs. It is spread through respiratory droplets and symptoms include coughing with mucus and blood.
Step-by-step explanation:
Tuberculosis (TB) is a chronic bacterial disease caused by Mycobacterium tuberculosis. It primarily affects the lungs but can also affect other organs such as the brain and kidneys. TB is spread by inhaling respiratory droplets from an infected person and symptoms include a persistent cough with mucus and coughing up blood.