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Chronic Wasting Disease FAQs

What is Chronic Wasting Disease (CWD)?

CWD is a neurodegenerative disease found in most deer species, including white-tailed deer, mule deer, elk, red deer, moose, and caribou. It is infectious, always fatal, and has no treatment. It’s part of a group of diseases know as transmissible spongiform encephalopathies (TSEs) and is similar to BSE (mad cow disease) in cattle and scrapie in sheep. These diseases cause irreversible damage to brain tissue, which leads to excessive salivation, neurological symptoms, emaciation, and death of the animal.

Has CWD been found in Louisiana's white-tailed deer population?

CWD has been detected in Louisiana. In addition, Arkansas, Mississippi, and Texas have detected it. The disease has been documented in 29 states and three Canadian provinces. LDWF has been monitoring and testing for CWD since 2002 and has checked more than 13,000 deer. The state’s first positive was detected in 2022.

What causes CWD and how is it spread?

CWD is caused by prions, which are proteins normally found in the body that have mutated. These prions accumulate in the brain and cause holes to develop in brain tissue. While prions are concentrated in the central nervous system, they can be found within other tissues of the infected animal, including muscle.  

CWD is spread through direct deer-to-deer contact or through contact with urine, feces, saliva, and body parts of infected deer or infectious materials in the soil. Prions will bind to soil particles once an infected deer carcass has decomposed. Once in a location, the disease is present indefinitely.  

What signs do deer with CWD display?

Prions can be shed within 6 months of infection, but it can take one to two years for CWD to incubate and exhibit outward symptoms in the infected animal. Symptoms include emaciation, lethargy, abnormal behavior, and loss of bodily functions. Other signs include excessive salivation, loss of appetite, progressive weight loss, excessive thirst and urination, teeth grinding, and drooping ears. 

Can humans contract CWD?

According to the Centers for Disease Control and Prevention, there is no evidence that CWD can infect humans. However, the CDC recommends caution in handling venison in the infected region and that deer be tested for CWD before consuming. CWD-positive deer should not be consumed by people.

How can I report a suspect deer?

You can assist LDWF in disease surveillance by reporting any deer that exhibits CWD symptoms. Suspect deer should be reported to the nearest LDWF office.

What is LDWF’s plan of action where CWD is detected in Louisiana?

Where CWD is discovered in Louisiana, LDWF will create a CWD control area, the size of which will depend on the location and distribution of infected deer as well as the deer density, distribution, and seasonal movements of the local deer population. There will be feeding and baiting restrictions in the control area where the disease is found. There also will be movement restrictions on deer body parts.

Hunters will not be able to bring whole deer out from the control area. They will be restricted to deboned meat, a clean skull cap with antlers, and the cape, which is the skin of the head and shoulders. Any deer harvested within the control area will be tested. LDWF will maintain intensive surveillance in the control area for an indefinite period of time.