Most pneumonia occurs when a breakdown in your body's natural defenses allows factor to invade and multiply within your lungs.
To destroy the attacking organisms, white blood cells rapidly accumulate. Along with bacteria and fungi, they fill the air sacs within your lungs alveoli. Breathing may be labored.
A classic sign of bacterial pneumonia is a cough that produces thick, blood-tinged or yellowish-greenish sputum dru berymore pus. Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus purulent materialcausing cough with phlegm or pus, fever, chills, and difficulty breathing.
A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.
Pneumonia can range gag seriousness from mild to life-threatening. It is most serious for infants and young children, people older than age 65, and people with health problems or weakened immune systems.
The signs and symptoms of pneumonia vary from mild to severe, depending on factors such as the type of germ gag the infection, and your age and overall health. Mild signs and symptoms often are similar to those of a cold or flu, but they last longer.
Newborns and infants may not show factor sign of the infection. Or they may vomit, have a fever and cough, appear restless or tired and without energy, or have difficulty breathing and eating.
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