The Respiratory System

An uncommon virus has caused clusters of severe respiratory illness among children in at least two U.S. states, according to the Centers for Disease Control and Prevention.

The bacteria that cause Legionnaires' disease may be living in your windshield washer fluid, new research finds. Legionnaires' disease is an uncommon type of pneumonia, but can be deadly.

You may think that coming down with a cold or the flu this time of year is inevitable, but there are some things you can do to reduce your risk of illness, experts say.

A man complaining of night sweats, fever and a persistent bloody cough was surprised to discover he had a nearly 3-inch ball of fungus growing in his left lung, according to a new case report.