What is Bronchitis?Bronchitis is an inflammation of the bronchial tubes, which carry air to and from the lungs. These tubes can become swollen or inflamed, usually due to an infection. The two main types of bronchitis are acute bronchitis and chronic bronchitis. Acute bronchitis is a short-term illness lasting four weeks or less. It is usually caused by viruses or bacteria and clears up on its...
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