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Bronchopneumonia Learning Center
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The list of organisms that can cause pneumonia is very large, and includes nearly every class of infectious organism: viruses, bacteria, bacteria-like organisms, fungi, and parasites (including certain worms ). Different organisms are more frequen...
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A virus is an infectious agent, often highly host-specific, consisting of genetic material surrounded by a protein coat.
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Bacteria are prokaryotes (unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0.5 to 20 micrometers.
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