Causes of lung infection

A disease called pneumonia causes the air sacs in one or both lungs to become inflamed. The air sacs may swell with fluid or pus (purulent material), which can lead to a cough that produces pus or phlegm, a fever, chills, and breathing difficulties. Pneumonia can be brought on by a number of different species, including bacteria, viruses, and fungi.

The severity of pneumonia can range from minor to life-threatening. The most vulnerable groups include newborns and young children, adults over 65, and those with health conditions or weaker immune systems.

Symptoms

Pneumonia symptoms range from minor to severe, depending on your age and general health as well as the sort of bacterium that is infecting you. Mild symptoms and indications frequently resemble the common cold or flu, but they remain longer.

Pneumonia can show these signs and symptoms:
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