by: fred lishman. chronic wasting disease (cwd) is a neurological disease found in species of deer,...
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By: Fred Lishman
Chronic Wasting Disease (CWD)
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Chronic Wasting Disease (CWD) is a neurological disease found in species of deer, elk and moose.
CWD is part of a family of diseases called spongiform encephalopathies or piron disease. (incomplete protein)
CWD is related to:mad cow disease scrapie in sheepcreutzfeldt-Jakob disease in humans
Currently, there is no known relationship that links these diseases.
What is Chronic Wasting Disease?
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CWD History CWD was first
discovered in 1967 in captive mule deer in Colorado.
CWD was identified as a spongiform encephalopathy in 1978.
CWD was then discovered in wild mule deer in 1981.
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How is CWD Spread?CWD can be spread
by close contact with infected animals.soil or other
surfaces salivafeces decomposing
infected carcasses Currently CWD is
not known to spread to humans.
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Symptoms of CWDUsually, it could take
months to years before the animal shows signs of the disease.
Typical symptoms of CWD are:poor body condition change in behavior stumblingexcessive droolingwidespread stance difficulty swallowing excessive urination, and
thirst
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The brain of the animal is tested to find PrPCWD in various tissues.
Areas of focus in the brain are:parasympathetic vagal nucleus (located in
dorsal portion of medulla oblongata)obex
How to Diagnose CWD
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Colorado Illinois Kansas Maryland Minnesota Missouri Nebraska New Mexico New York North & South Dakota Texas Utah Virginia & west Virginia Wisconsin Wyoming *Pennsylvania (captive deer in Adams county October 2012)
Some States where CWD is Found
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CWD Infected Areas
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There is No treatment or cure for CWD.Try to prevent the spread of CWD in
uninfected populations.Quarantine and euthanize animals with the
disease.In free-ranging animals, it is harder to
control.
CWD and Control
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Precautious areas
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The PGC issued an Executive Order prohibiting the importation of certain parts from cervids.
Some of these parts include:headspinal cord/ backbonespleenany object that may have brain matter
Some things hunters can do to remain safe are:don’t shoot, handle or consume animals that appear sick wear gloves when field dressing bone out the meat minimize handling spinal cord/ brain have your animal tested
What Precautions should Hunters take?
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Report any signs of sick animals to your local Game Commission.
Do not approach or touch the animal. Do not feed animals.
What can you do?