cause of bronchial infection
The most common cause of chronic bronchitis is smoking tobacco. Viruses and bacteria can also play a role, because the afflicted bronchial tubes are vulnerable to picking up secondary infection. Pneumonia is an example of a secondary bacterial infection that can pile upon chronic bronchitis. 1.
Inflammation in the lining of the bronchial tubes can cause bronchitis. The bronchial tubes are the airways that make the connection between the trachea, which is also known as the windpipe, and the lungs. The lining of the bronchial tubes acts as a protection and a covering for the respiratory system.