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Glossary
Pages 335-337

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From page 335...
... Bioaerosols Aerosolized biological particles that range in diameter from 0.02 to 100 micrometers. Biomarker—Changes in the characteristics of a biologic sample, such as changes in enzyme levels, that reflect a particular environmental exposure, a particular human or animal disease process, or evidence of increased or decreased susceptibility to adverse effects from such exposures.
From page 336...
... permissible on a given site. Margin of exposure A ratio defined by EPA as a dose derived from a tumor bioassay, epidemiological study, or biologic marker study, such as the dose associated with a 10% response rate, divided by an actual or projected human exposure.
From page 337...
... Secondary transmission—The spread of disease by indirect transmission of the infectious agent. Transmission can be from person-to-person contact, whereby an infected individual infects another, from exposure to contaminated objects, or via environmental pathways, such as contamination of soil or surface water.


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