Human Viral Pneumonia, Lung, sec. 7 µm H&E Microscope Slide

Microscope slide of human lung infected with viral pneumonia, a pneumonia caused by a virus.

Viruses are 1 of the 2 major causes of pneumonia, the other being bacteria; less common causes are fungi and parasites.

Viruses are the most common cause of pneumonia in children, while in adults bacteria are a more common cause.

Stained with hematoxylin and eosin.