The<unk> , also enzootic or<unk>  transmission<unk> , is a portion of the natural transmission<unk>  of a pathogen.<unk>  refers to the occurrence of a subject in or affecting wild animals. The<unk>  is the fraction of the pathogen population's lifespan spent<unk> ng between wild animals and vectors. Humans are usually an incidental or dead-end host, infected by a vector. This is opposed to a "domestic" or "urban"<unk> , in which the pathogen<unk> s between vectors and non-wild, urban, or domestic animals; humans may have differing infection rates from these<unk> s due to transmission efficiencies and environmental exposure levels. Examples of pathogens that contain a<unk>  include trichinosis, dengue viruses, Yersinia pestis, Chagas disease, and rabies.
Sylvatic cycle
Epizootic
Epidemic
Vertical transmission
Natural reservoir
Holoendemic
Bedside manner
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