Just like the origin of the disease, it's not exactly known how it gets transmitted. However, there's a possibility that the infectious agent may get passed in saliva, urine or feces. Transmission may be from one animal to another. Maternal transmission may also occur. The minimal period of incubation between the infection and the development of the clinical disease seems to be around 16 months. The infectious agents of CWD are incredibly resistant so that transmission may occur directly or indirectly. This means that concentrating the animals in captivity has the potential to increase the likelihood of indirect and direct transmission. Also, when the infected animals in the wild start moving, this poses a considerable risk in the spread of the disease in unaffected areas.
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