Is bronchitis a bacterial or viral infection?

Bronchitis is a common respiratory disease in which the bronchial passages holding mucous membrane of the lungs gets inflamed. The disease is of two types: acute bronchitis (lasts from one to three weeks) and chronic bronchitis (that lasts for at least 3 months of the year for two years consecutively).

Acute bronchitis is typically caused by lung infections. 90% of bronchitis is viral in origin. Repeated attacks of acute bronchitis weaken and irritate bronchial airways over time. this can result into chronic bronchitis. Chronic bronchitis is a long-term disorder that often requires a proper and regular medical treatment.

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