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The
Infectious Disease Process (2 of 30)
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Microorganisms include the following classifications: bacteria, viruses, fungi, algae, yeasts, and protozoa. These organisms are too small to be seen by the unaided human eye. |
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They are found in the soil, in the water, and on plants and animals. In fact, billions are found in humans on the skin and in both the nasal and intestinal tracts.
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