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Chronic Wasting Disease (CWD)

Chronic Wasting Disease (CWD). By: Fred Lishman. What is Chronic Wasting Disease?. 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)

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Chronic Wasting Disease (CWD)

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  1. Chronic Wasting Disease (CWD) By: Fred Lishman

  2. What is Chronic Wasting Disease? • 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 sheep • creutzfeldt-Jakob diseasein humans • Currently, there is no known relationship that links these diseases.

  3. 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.

  4. How is CWD Spread? • CWD can be spread by close contact with infected animals. • soil or other surfaces • saliva • feces • decomposing infected carcasses • Currently CWD is not known to spread to humans.

  5. Symptoms of CWD • Usually, 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 • stumbling • excessive drooling • widespread stance • difficulty swallowing • excessive urination, and thirst

  6. How to Diagnose CWD • 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

  7. Some States where CWD is Found • 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)

  8. CWD Infected Areas

  9. CWD and Control • 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.

  10. Precautious areas

  11. What Precautions should Hunters take? • The PGC issued an Executive Order prohibiting the importation of certain parts from cervids. • Some of these parts include: • head • spinal cord/ backbone • spleen • any 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

  12. What can you do? • Report any signs of sick animals to your local Game Commission. • Do not approach or touch the animal. • Do not feed animals.

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