Every year on November 12, it is observed as World Pneumonia Day to remind people that we need to diagnose and treat this disease at the earliest to reduce suffering and death. Although pneumonia originates from the respiratory system it can cause multi-organ dysfunction.
1) Pneumonia is primarily an infection of the lung, caused by either bacteria, viruses, or fungi. Bacterial pneumonia is more common and occurs following a viral infection. The process starts with inflammation, which causes an outpouring of fluid into the lungs and later pus formation. It can affect one or more lobes of the lung or can be bilateral. Bacterial pneumonia tends to be more severe.