Pneumonia is an infection in one or both lungs. It can be caused by bacteria, viruses, or fungi. Bacterial pneumonia is the most common type in adults. Pneumonia causes inflammation in the air sacs in the lungs, which are called alveoli. The alveoli fill with fluid or pus, making it difficult to breathe. When the germs that cause Pneumonia reach the lungs, the lungs' air sacs (alveoli) become inflamed and fill up with fluid.

When the person hangs the Pneumonia, oxygen may have trouble reaching the blood. If there is too little oxygen in the blood, the body cells can't work properly. Because of this and the risk of the infection spreading through the body, Pneumonia can cause death. Pneumonia affects the lungs in two ways. It may be in only one part, or lobe, of the lung, which is called lobar Pneumonia. Or, it may be widespread with patches throughout both lungs, which is called bronchial Pneumonia


  • What is pneumonia and different types of pneumonia
  • Is pneumonia contagious?
  • What is the contagious period for pneumonia?
  • Causes and risk factors for pneumonia
  • Diagnosis tests for pneumonia
  • Treatment for pneumonia

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