Pneumonia is a common lung infection that can make breathing difficult and, in some cases, become life-threatening. It happens when the air sacs in the lungs fill with fluid or pus. Each year, about 900,000 Americans are diagnosed , and around 150,000 end up in the hospital. Roughly 41,000 people die from complications, according to federal health data .

The illness can range from mild to severe. Some people recover at home with rest and medication, while others may need hospital care. Knowing how pneumonia develops, who’s most at risk, and what symptoms to watch for can help you catch it early and prevent serious illness.

What causes pneumonia

Pneumonia develops when the lungs become inflamed and fill with fluid. Doctors group cases based on what caused them, where they were caught

See Full Page