what is pnemonia ? pls tell urgent
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Pneumonia is a lung infection that can range from mild to so severe that you have to go to the hospital.
It happens when an infection causes the air sacs in your lungs (your doctor will call them alveoli) to fill with fluid or pus. That can make it hard for you to breathe in enough oxygen to reach your bloodstream.
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pneumonia is a infection that inflames the air sacs in one or both lungs .the air sacs may fill with fluid purulent material causing cough fever and difficulty in breathing a variety of organisms including bacteria fungi viruses can cause pneumonia
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