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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]
Wildlife agencies discourage such efforts, which cause harm to mule deer populations by spreading disease (such as tuberculosis and chronic wasting disease) when deer congregate for feed, disrupting migratory patterns, causing overpopulation of local mule deer populations, and causing habitat destruction from overbrowsing of shrubs and forbs ...
The Centers for Disease Control and Prevention (CDC) have been keeping surveillance on CJD cases, particularly by looking at death certificate information. [37] Chronic wasting disease (CWD) is a prion disease found in North America in deer and elk. The first case was identified as a fatal wasting syndrome in the 1960s.
Prevalence rates as high as 50% in mule deer near Durango, Colorado; 78% in black tailed deer herd in Mendocino County, California, [13] 90% in mule deer herds at high elevation sites in Arizona and New Mexico, [14] and 100% (14 of 14 animals) in Texas mule deer [15] have been reported. In areas of high abundance in definitive hosts, the fear ...
It is the causative agent of epizootic hemorrhagic disease, an acute, infectious, and often fatal disease of wild ruminants. In North America, the most severely affected ruminant is the white-tailed deer (Odocoileus virginianus), although it may also infect mule deer, black-tailed deer, elk, bighorn sheep, and pronghorn antelope. [1]
Yet this disease is not a new occurrence; the first identified case of chronic wasting disease was in captive deer in a Colorado research facility in the late 1960s, then in wild deer in 1981.
Found in deer in northern Colorado and southern Wyoming in the 1990s, chronic wasting disease (CWD) has been recorded in free-ranging deer, elk and moose in at least 32 states across all parts of ...
File photo of a Mule deer in Colorado, USA. Up to 800 samples of chronic wasting disease were found in deer, elk and moose (Getty Images) In the UK, 4.4m cattle were slaughtered after mad cow ...