Mayo Clinic Minute: Is pneumonia bacterial or viral?
Pathology Insights: Nonspecific Interstitial Pneumonia NSIP with Sanjay Mukhopadhyay
"Common Pediatric Respiratory Problems" by Monica Kleinman, MD for OPENPediatrics
Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli. Typically symptoms include some combination of productive or dry cough, chest pain, fever, and trouble breathing. Severity is variable.