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Chronic wasting disease (CWD), sometimes called zombie deer disease, is a transmissible spongiform encephalopathy (TSE) affecting deer.TSEs are a family of diseases thought to be caused by misfolded proteins called prions and include similar diseases such as BSE (mad cow disease) in cattle, Creutzfeldt–Jakob disease (CJD) in humans, and scrapie in sheep. [2]
A member of this family is called a deer or a cervid. They are widespread throughout North and South America, Europe, and Asia, and are found in a wide variety of biomes . Cervids range in size from the 60 cm (24 in) long and 32 cm (13 in) tall pudú to the 3.4 m (11.2 ft) long and 3.4 m (11.2 ft) tall moose .
Adults of P. tenuis can persist for many years in a single host, which allows for many first-stage larvae to be shed in feces. [1] [8] It is quite common in many populations of white-tailed deer, which have built up a strong resistance. [4] After gastropod ingestion, moose or other deer may be hosts of the second- and third-stage worms.
However, from data provided by Klein (1964) [3] and McMahon (1975), [4] the relative lower leg length of mule deer can vary at least by 22%. Morejohn and Dailey (2004) [ 5 ] published the analysis of the osteological anatomy and morphology of a practically complete skeleton of a Pleistocene adult male Odocoileus lucasi (Hay 1927) along with ...
A Michigan man stunned the internet after sharing images of a "one-in-a-million" deer he found during a photography session. Steve Lindberg, a former state representative living in the state's ...
In some U.S. counties, over 80% of deer are infected. Experts worry that the progressive, fatal illness could spill-over to humans in a fashion similar to mad cow disease.
The fibromas are most often caused by host-specific papillomaviruses.They may also be due to host-specific poxviruses. [1] [4]The transmission of cutaneous fibromas in the white-tailed deer is caused by a virus that is thought to be transmitted through a variety of insect bites or by a deer coming in contact with any contaminated object that scratches or penetrates the skin of the deer or ...
The sika deer (Cervus nippon), also known as the northern spotted deer or the Japanese deer, is a species of deer native to much of East Asia and introduced to other parts of the world. Previously found from northern Vietnam in the south to the Russian Far East in the north, [ 1 ] it was hunted to the brink of extinction in the 19th century.