Pneumonia

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Overview
Pneumonia is a general term that means inflammation of the lungs. It can affect one or both of the lungs. If bacteria, a virus, a fungus, or other foreign matter enters the lungs, the body’s natural immune response produces inflammation in the affected area. When inflammation occurs in the lungs, fluid and pus (destroyed white blood cells) can collect and interfere with normal lung function, which is to provide oxygen to and remove carbon dioxide from the bloodstream.

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