Pneumonia

The Pneumonia topic includes research on the causes, transmission, diagnosis, prevention, and treatment of pneumonia.

Pneumonia is an infection that affects one or both lungs. It causes the air sacs, or alveoli, of the lungs to fill up with fluid or pus. Symptoms can range from mild to serious. Many germs (bacteria, fungi, parasites, and viruses) can cause pneumonia, resulting in tens of thousands of deaths each year.