Definition for Infectious disease
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Revision as of 16:18, 7 February 2018 by Cloveb (Talk | contribs) (Created page with "Biological hazard in which other species parasitize humans, fulfilling their ecological roles. We can’t avoid risk, but we can reduce it. Category: Environmental & Conser...")
Biological hazard in which other species parasitize humans, fulfilling their ecological roles. We can’t avoid risk, but we can reduce it.
