Medical Surgical Nursing – I–August-2018 (Adult Including Geriatric) 1 Long Essay (Answer Any One) 2+5+8-15 💜 (1) (a) Define Pulmonary Tuberculosis. Pulmonary tuberculosis (TB) is a contagious bacterial infection that primarily affects the lungs. It is caused by the bacterium Mycobacterium tuberculosis. Here’s an in-depth look at pulmonary tuberculosis: Definition and Causative Agent Pulmonary Tuberculosis (TB): A potentially serious infectious disease that affects the lungs, caused by the bacterium Mycobacterium