10 Facts About Pneumonia

Pneumonia is an inflammatory condition of the lung primarily affecting the small air sacs known as alveoli.

Pneumonia is usually caused by infection with viruses or bacteria, and less commonly by other microorganisms.

Pneumonia believed to be due to bacteria is treated with antibiotics.

Pneumonia was historically divided into "typical" and "atypical" based on the belief that the presentation predicted the underlying cause.

Pneumonia is due to infections caused primarily by bacteria or viruses and less commonly by fungi and parasites.

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Pneumonia'stoplasmosis is most common in the Mississippi River basin, and coccidioidomycosis is most common in the Southwestern United States.

Pneumonia frequently starts as an upper respiratory tract infection that moves into the lower respiratory tract.

Pneumonia is typically diagnosed based on a combination of physical signs and often a chest X-ray.

Pneumonia is most commonly classified by where or how it was acquired: community-acquired, aspiration, healthcare-associated, hospital-acquired, and ventilator-associated pneumonia.

Pneumonia is the most common hospital-acquired infection that causes death.