 What Happens During a Pneumonia Infection?

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Germs Invade the Lungs: Bacteria, viruses, or fungi enter the lungs and cause infection.

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Breathing Becomes Difficult: Fluid-filled lungs make it hard for oxygen to pass into the bloodstream.

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Cough and Fever Start: The body reacts with symptoms like cough (with mucus), fever, and chills.

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Chest Pain May Occur: Inflammation can cause sharp pain while breathing or coughing.

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Fatigue and Weakness Set In: Less oxygen reaching tissues can lead to extreme tiredness.

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