Disease of Deer Information
Chronic Wasting Disease Minnesota Department of Agriculture What are the symptoms of CWD? Infected deer and elk show progressive weight loss ... Other signs include staggering, consuming large amounts of water, ...
USGS CWD Map, Updated January, 2013. Click to Enlarge
According to information provided by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service Veterinary Services as of 2011, approximately 164,500 farmed cervids (both deer and elk) have been tested across the nation since 2002. Of that number, only 171 farmed cervids tested positive for CWD. Of those, USDA reported CWD was detected in 13 farmed white-tailed deer herds and 39 farmed elk herds in 11 states: Colorado, Kansas, Michigan, Minnesota, Missouri, Montana, New Hampshire, New York, Oklahoma, South Dakota and Wisconsin.
Out of approximately 775,000 free-ranging wild cervids tested since 2002, approximately 3,130 animals were found to be positive in 15 states: Colorado, Illinois, Kansas, Maryland, Minnesota, North Dakota, New Hampshire, New Mexico, New York, South Dakota, Utah, Virginia, Wisconsin, West Virginia and Wyoming.
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Chronic Wasting Disease Alliance, updates and information
Evaluation of a wild white-tailed deer population management program for controlling chronic wasting disease in Illinois, 2003–2008 available online April 1, 2013 Preventive Veterinary Medicine
... The results showed that deer population management intervention as practiced in Illinois during the study period was negatively associated with CWD prevalence and the strength of association varied depending on age of deer and the measure of intervention pressure. The population management programs showed a more consistent association with reduced CWD prevalence in fawn and yearling white-tailed deer than in adult deer. Our results also suggested that frequent and continuing intervention events with at least moderate intensity of culling were needed to reduce CWD prevalence. A longer study period, however, is needed to make a more definite conclusion about the effectiveness of similar population management programs for controlling CWD in wild white-tailed deer.
Deer density and disease prevalence influence transmission of chronic wasting disease in white-tailed deer. … - Ecosphere, 2013 Wisconsin
... We evaluated how frequency-dependent, density-dependent, and intermediate transmission models predicted CWD incidence rates in harvested yearling deer.... Our results indicate a combination of social structure, non-linear relationships between infectious contact and deer density, and distribution of disease among groups are important factors driving CWD infection in young deer. The landscape covariates % deciduous forest cover and forest edge density also were positively associated with infection rates, but soil clay content had no measurable influences on CWD transmission. Lack of strong density-dependent transmission rates indicates that controlling CWD by reducing deer density will be difficult....
Early detection of chronic wasting disease prions in urine of pre-symptomatic deer by real-time quaking-induced conversion assay TR John, HM Schätzl, S Gilch - Prion, 2013
... Chronic wasting disease (CWD) is a prion disease of captive and free-ranging deer (Odocoileus spp), elk (Cervus elaphus nelsonii) and moose (Alces alces shirasi). Unlike in most other prion diseases, in CWD prions are shed in urine and feces, which most likely contributes to the horizontal transmission within and between cervid species. To date, CWD ante-mortem diagnosis is only possible by immunohistochemical detection of protease resistant prion protein (PrPSc) in tonsil or recto-anal mucosa-associated lymphoid tissue (RAMALT) biopsies, which requires anesthesia of animals. We report on detection of CWD prions in urine collected from pre-symptomatic deer and in fecal extracts by using real time quaking-induced conversion (RT-QuIC). This assay can be useful for non-invasive pre-symptomatic diagnosis and surveillance of CWD.
Intranasal Inoculation of White-Tailed Deer (Odocoileus virginianus) with Lyophilized Chronic Wasting Disease Prion Particulate Complexed to Montmorillonite Clay
TA Nichols, TR Spraker, TD Rigg, C Meyerett-Reid… - PLOS ONE, 2013
Chronic wasting disease (CWD), the only known prion disease endemic in wildlife, is a persistent problem in both wild and captive North American cervid populations. This disease continues to spread and cases are found in new areas each year. Indirect transmission can occur via the environment and is thought to occur by the oral and/or intranasal route. Oral transmission has been experimentally demonstrated and although intranasal transmission has been postulated, it has not been tested in a natural host until recently. .. Our results demonstrate that CWD can be efficiently transmitted utilizing Mte particles as a prion carrier and intranasal exposure.
A Potapov, E Merrill, M Pybus, D Coltman, MA Lewis - Ecological Modelling, 2013
We develop a model for the spread of chronic wasting disease (CWD) in a mule deer (Odocoileus hemionus) population to assess possible mechanisms of disease transmission and parameterize it for the mule deer population in Alberta, Canada... Multiple mechanisms are likely to produce the ratio of male:female prevalence levels and include: (1) environmentally mediated transmission associated with higher food intake by males, (2) female to male transmission during mating of this polygamous species, (3) increased male susceptibility to CWD and (4) increased intensity of direct contacts within male social groups. All of these mechanisms belong to the class of frequency-dependent transmission. Also important is seasonality in deer social structure with an increasing ratio of prevalence in males:females under all mechanisms as the duration of sexual segregation increases throughout a year.
USDA Establishes a Herd Certification Program for Chronic Wasting Disease in the U.S. June 9, 2012, PoliticalNews.me
CDC Warns Against Exposure to 'Mad Cow'-Like Brain Diseases May 23, 2011 Disease U.S. News & World Report
The study, published in the June issue of the Journal of the American Dietetic Association, found that eating wild deer meat (venison) is one of the most common ways people are exposed to these serious, debilitating diseases. "While prion diseases are ... Hunting for deer or elk -- especially in regions where chronic wasting disease is considered common (northeastern Colorado, southeastern Wyoming and southwestern Nebraska)....hunters in these areas should protect themselves from exposure to chronic wasting disease by taking the following steps: do not eat meat from sickly deer or elk; don't eat brain or spinal cord tissues; minimize the handling of brain and spinal cord tissues; and wear gloves when field-dressing carcasses.
Deer Disease News Archive by State
Lyme Disease: Deer are not susceptible to Lyme disease. Mice are the main reservoir for Lyme disease. Birds can carry to ticks over distances that may lead to the spread of the disease. For more information, see the Deer and Lyme Disease page.
Deer Disease News Archive by State, Starts in the Left Column
Other Deer Disease
HAIR-LOSS SYNDROME IN BLACK-TAILED DEER OF THE PACIFIC NORTHWEST ... by RJ Bildfell - 2004 -
... including coastal bays, coastal mountains, central valley agricultural land, and urban areas. ..... Academic Press Inc., San Diego, California, pp. 677–680. ... Pediculosis of mule deer and white- tailed deer fawns in captivity. ... In Foreign animal diseases, Carter Printing Company, Richmond, Virginia, pp. ...
Mystery Virus Kills 200 Wild Deer in Northern California September, 1993. Marla Cone, Times Environmental Writer An estimated 200 wild deer, mostly fawns, have died after being stricken by an unknown virus in suburban and remote mountain areas of Northern California, state wildlife officials reported Friday.
Deer have equine encephalitis September 24, 2005 Michigan BY ERIC SHARP FREE PRESS COLUMNIST
The mysterious disease that has affected deer in Kent County has been solved. State veterinarians say it is eastern equine encephalitis, sometimes found in horses but identified only once before in wild whitetails in the United States . . . residents of the southwest Michigan county have reported seeing deer stagger, drool, grow thin and lose fear of humans before dying.
Parapoxvirus Infections Caused by Contact With Deer 12/30/2010 MedPage Today In 2009, the CDC confirmed infections with parapoxvirus in two deer hunters in the eastern US, according to a brief report. ...