What is neumonia?

Lung infection: "pneumonia" is a lower respiratory tract infection (lungs). It can be caused by a virus, bacteria, or even fungus. It is a serious condition and cause significant problems or can even be fatal. Some signs of pneumonia can be coughing, chest discomfort, shortness of breath, fever, sputum that is thick and discolored, along with many other signs.

Pneumonia: Pneumonia is infection of the lung that is usually caused by bacteria or viruses.