Aug 16, · Bronchitis is one of the most common chest infections. It occurs as a result of an infection of the bronchi, which are major airways to the lungs. The National Heart, Lung, and Blood Institute note. Therre are two main types of chest infection in adults. Acute bronchitis, and, less common, pneumonia.
Jan 06, · Chest Infection Causes Acute bronchitis is most often caused by a viral infection, and pneumonia most often has a bacterial culprit. Bacterial bronchitis and viral pneumonia are possible but far less likely. Another possible-but-rare cause is a fungal infection from inhaling spores. May 02, · A chest infection is an infection that affects your lower large airways (bronchi) and your lungs. Pneumonia and bronchitis are the most common chest infections. Bronchitis is usually caused by a viral infection. Pneumonia is usually due to bacterial infection.