Question

Bronchitis often progresses to a more severe lung condition called _____________________, which was the leading world killer around 1900 A.D.

Answer 1

Answer: Tuberculosis

Explanation: Tuberculosis is caused by the microorganism called Mycobacterium tuberculosis.

Tuberculosis can also be caused by Tubercle bacillus. Tuberculosis is characterized by sever cough , chest pains shortness of breath. Often times individuals who have untreated tuberculosis start coughing out blood.