Microorganisms that reside in the body but do not cause disease are known as

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Normal flora are microorganisms that reside in the body without causing disease. They may even benefit the host by aiding in digestion and helping to prevent the growth of harmful bacteria. Transient flora are microorganisms that are present on the body for a short period of time, such as those picked up through social contact or environmental exposure. Extraneous microorganisms are those that are not normally found in or on the body. Staphylococci are a type of bacteria that can be found as part of the normal flora, but this term does not encompass all non-pathogenic microorganisms.

Microorganisms That Reside in the Body but Do Not Cause