Pneumonia is a common lung infection that inflames the alveoli in one or both lungs. These sacs may fill with mucus, causing difficulty breathing. Various bacteria, viruses, and fungi can cause pneumonia. Symptoms change depending on the cause of the infection and an individual's overall health. Common symptoms involve fever, shivering, fatigue, t

Pneumonia is a/happens to be/presents as an infection that inflames the air sacs in one or both lungs. These air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, breathing problems, and chest pain. Pneumonia can be caused by a variety of organisms, including bacteria, viruses, and fungi. In most