Pneumonia is a common respiratory infection that inflames the alveoli in one or both lungs. These pockets may fill with fluid, causing difficulty breathing. Many bacteria, viruses, and fungi can cause pneumonia. Symptoms differ depending on the origin of the infection and a patient's overall health

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, shortness of breath, and aches in your chest. Pneumonia can be caused by a variety of