Pneumonia is an infection of one or both lungs which is usually caused by bacteria, viruses, or fungi. Prior to the discovery of antibiotics, one-third of all people who developed pneumonia subsequently died from the infection. Currently, over 3 million people develop pneumonia each year in the United States. Over a half a million of these people are admitted to a hospital for treatment. Although most of these people recover, approximately 5% will die from pneumonia. Pneumonia is the sixth leading cause of death in the United States. Signs and Symptoms Symptoms vary depending on the age of the child and the cause of the pneumonia, but common ones include: fever chills cough nasal congestion unusually rapid breathing (in some cases, this is the only symptom) breathing with grunting or wheezing sounds labored breathing that makes the rib muscles retract (when muscles under the ribcage or between ribs draw inward with each breath) and causes nasal flaring vomiting chest pai...