Pneumonia is a widespread lung disease across the world. Yet, awareness about pneumonia among masses is not much. What is pneumonia, after all? "Pneumonia is an infection in your lungs. It can be caused by bacteria, viruses or fungi," says Consultant Pulmonologist Dr.K.Ramasubramaniam, Pulmonologist at Kauvery Hospital, Trichy. Pneumonia, according to him, will cause your lung tissue to swell, and can lead to the collection of fluid or pus in ...