Pneumonia is a common respiratory infection that inflames the alveoli in one or both lungs. These sacs may fill with mucus, causing difficulty breathing. Numerous bacteria, viruses, and fungi can cause pneumonia. Symptoms differ depending on the origin of the infection and a patient's overall health. Common symptoms include fever, chills, fatigue,

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, difficulty breathing, and chest pain. Pneumonia can be caused by a variety of organisms, including bacteria, viruses, and fungi. In mo