Which term refers to lung infections caused by bacteria, viruses, fungi, protozoa, or other microorganisms?

• A. TB
• B. COPD
• C. Lung infections
• D. Pleurisy

Answer: (C)

Lung infections is the broad term that covers infections in the lungs caused by bacteria, viruses, fungi, protozoa, or other microorganisms. It’s the umbrella category that includes conditions like pneumonia, which can be caused by many different pathogens, as well as other infectious processes in the lungs. The other options are more specific or different conditions: TB is a single infectious disease caused by Mycobacterium tuberculosis; COPD is a chronic, noninfectious lung disease characterized by airflow limitation; pleurisy refers to inflammation of the pleural membranes and is not itself an infection of the lung tissue. So the general label that fits any infectious process in the lungs is lung infections.