Wednesday, October 28, 2015

Texas Interim Chronic Wasting Disease Response Rules Comment online through 07:00 a.m. November 5, 2015

Texas Interim Chronic Wasting Disease Response Rules Comment online through 07:00 a.m. November 5, 2015

http://tpwd.texas.gov/business/feedback/public_comment/proposals/201511_deer_breeder_cwd.phtml

I think the cwd rules could have been more stringent in a variety of ways, but will agree for now with what is proposed. I still think the testing should be increased across the board. I think there is still too much catering to the industry. see why I think this below and latest peer review on cwd sound science. ...

Wednesday, October 28, 2015

Texas' wild deer herd must be protected

http://chronic-wasting-disease.blogspot.com/2015/10/sanders-texas-wild-deer-herd-must-be.html

Terry S. Singeltary Sr.

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Sanders: Texas' wild deer herd must be protected

Sanders: Texas' wild deer herd must be protected

Ignore absurd accusations by breeders association- chronic wasting disease should be taken seriously. By Jenny Sanders | October 27, 2015

The threat of chronic wasting disease is real. Appropriate and timely actions must be taken to protect our wild deer herds, hunting markets and rural economies.

Yet, the Texas Deer Association continues to downplay this disease and avoid prudent accountability for its presence and potential spread through unnatural movement of captive-raised deer around the state.

The organization and its members have lambasted, vilified and degraded Texas Parks and Wildlife Department personnel who have worked night and day to protect all our interests since the June detection of chronic wasting disease in a Medina County deer-breeding facility. Despite deer breeders' claims, the state agency's actions have been guided by science, caution and utmost concern for wildlife.

On Oct. 1, the Texas Deer Association filed a lawsuit against the Parks and Wildlife Department, asserting that the agency overstepped its bounds in its management strategy to curb the spread of the disease in whitetails.

Multiple deer breeding trade associations - including the TDA - actively participated in the construction and approval of the state's chronic wasting disease management plan and an Aug. 19 emergency order from Parks and Wildlife. Yet breeders are now opposed to the agreed-upon increased mandatory testing and restrictions on breeder deer movement.

These breeders are also claiming ownership of the deer in their pens and challenging the centuries-old Public Trust Doctrine, which establishes a trustee relationship of state government to manage wildlife for present and future generations. Private ownership of wildlife would take us back to the days of English kings and does not fit with today's American values that all citizens, regardless of economic status, have ownership interest in wildlife and a responsibility to invest in conservation.

This model, coupled with the abundance of private land in Texas, has resulted in a unique public-private partnership that has facilitated effective management of wildlife for decades, and should not be abandoned to appease a narrow stakeholder group that views wildlife simply as a commodity to be exploited for personal gain.

Although deer breeders would have the public believe they are responsible for the success of hunting in Texas, the reality is that they represent only .5 percent of Texas landowners, .1 percent of Texas hunters and the deer in their pens account for just 2.5 percent of the state's wild population. Deer breeders and the trade associations that represent them are the antithesis of the real stewards and sportsmen responsible for healthy wildlife populations and hunting economies in Texas. Despite all of this, their shrill political megaphone continues to shut down the interests of Texans and Texas wildlife.

Meanwhile, the Texas Parks and Wildlife Department is forced to refocus its time and funding from the important work of managing and conserving wildlife for all Texans, to dealing with this lawsuit and this narrow interest group. Chronic wasting disease is the latest in a laundry list of concerns regarding deer-breeding practices.

We stand by the state agency's decisions in response to chronic wasting disease and support continued sensible regulatory protocols. If you value wildlife, please attend the Texas Parks and Wildlife Commission meeting on Nov. 5 at 9 a.m. at the agency's headquarters in Austin, where the state's emergency order is expected to come under challenge.

It is time for the silent majority of hunters, landowners and wildlife enthusiasts to speak up to protect Texas' wildlife and ensure testing continues on both captive and wild deer, the emergency rule remains in place, and liberations of captive-raised deer never again occur on low-fenced land. We must keep Texas wildlife wild.

Sanders is executive director of Texans for Saving Our Hunting Heritage.


 


re-Texas Wild Deer Herds Must Be Protected Houston Chronicle Wednesday, October 28, 2015
 
Ignore absurd accusations by breeders association – chronic wasting disease should be taken seriously by Jenny Sanders
 
Mrs. Sanders could not be more correct. these breeders and the cervid industry as a whole, they like to point fingers, and they refuse to accept some responsibility of CWD, when it’s been proven that these captive deer industry is, and has been part of the CWD problem. until the captive cervid industry as a whole comes on board and accepts this fact, they will continue to be a part of the Chronic Wasting Disease CWD TSE Prion problem.
 
the breeders and cervid industry as a whole knew when they started their business, they knew the risk factors of CWD, and they knew what would happen if cwd was ever discovered at their facilities. they chose to roll the dice, ignoring cwd tse prion sound science to this day. I feel no pity for them. but you let this industry weaken cwd tse prion rules anymore, and you risk loosing the wild herds here in Texas.
 
I know the Houston Chronicle cannot print all this, but I hope that your people take the time to read latest cwd tse prion science that is peer review and understand, cwd is here to stay, it’s not going anywhere, and until everyone can get on the same page, containing cwd will be near impossible, and masking it further, will be a terrible mistake for the state of Texas, because I can guarantee you it will continue to spread.
 
I asked someone recently, what sort of hunting legacy do you want to leave your children, did you want to have where all you have are blind, slobbering, drooling, stumbling, or maybe even healthy looking subclinical cwd infected cervid, to go on and expose who knows what (cause cwd is spreading, it has mutated, and nobody can seem to stop it so far), but is this what we want to leave our children? the only answer I ever seem to get from anyone in the industry, is just let cwd take care of itself. how is that working out for us so far? my opinion, until we have a 100% validated live test for cwd tse prion (and we don’t yet)
 
 
in my opinion, the scorched earth policy is the only policy available. and then what do you do with the land? ($$$)
 
this cwd tse prion must be stopped. the vertical and lateral transmission of this cwd tse prion agent amongst cervids, if cwd jumps species (if it has not already), and transmits the same ways vertical and lateral in other species, and the other species are as susceptible from so many different routes and sources, simply put, we’re screwed, if we are not screwed already, I mean the mad cow bse tse prion been out of the barn here in North America for Decades,  just saying.
 
I am not trying to scare anyone, I am simply presenting the facts, you must make your own decision or not. we have ignored these tse prion disease way too long. right now seems policy is just to change the name of them, and call it a day, (that would take to long to explain i.e. ibnc bse tse or the infamous sporadic ffi or sporadic gss that is not tied to any family link...GET OUT OF HERE...iatrogenic maybe from ffi or gss, maybe) but to let lobbyist and their legislators make up the science and the policy making for cwd tse pron there from, and continue to ignore sound science, is a terrible mistake in my opinion.
 
like I said, if and when, a tse mutates into humans like cwd in cervid, we are screwed. we have been extremely lucky so for, with the _documented_ body bag count, with the science to date i.e. the UKBSEnvCJD only theory (I have highly disputed this from day one, and since then have been proven correct by science, but on paper, it’s the same old shit still i.e. UKBSEnvCJD only theory).
 
CHRONIC WASTING DISEASE CWD TSE
 
The TSE prion disease survives ashing to 600 degrees celsius, that’s around 1112 degrees farenheit.
 
you cannot cook the TSE prion disease out of meat.
 
you can take the ash and mix it with saline and inject that ash into a mouse, and the mouse will go down with TSE.
 
Prion Infected Meat-and-Bone Meal Is Still Infectious after Biodiesel Production as well.
 
the TSE prion agent also survives Simulated Wastewater Treatment Processes.
 
IN fact, you should also know that the TSE Prion agent will survive in the environment for years, if not decades.
 
you can bury it and it will not go away.
 
The TSE agent is capable of infected your water table i.e. Detection of protease-resistant cervid prion protein in water from a CWD-endemic area.
 
it’s not your ordinary pathogen you can just cook it out and be done with. that’s what’s so worrisome about Iatrogenic mode of transmission, a simple autoclave will not kill this TSE prion agent.
 
$$$ PRICE OF CWD TSE PRION mad cow POKER GOES UP $$$
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
 
Title: Transmission of chronic wasting disease to sentinel reindeer (Rangifer tarandus tarandus)
 
Authors
 
item Moore, S - item Kunkle, Robert item Nicholson, Eric item Richt, Juergen item Hamir, Amirali item Waters, Wade item Greenlee, Justin
 
Submitted to: American College of Veterinary Pathologists Meeting Publication Type: Abstract Only Publication Acceptance Date: August 12, 2015 Publication Date: N/A
 
Technical Abstract: Chronic wasting disease (CWD) is a naturally-occurring, fatal neurodegenerative disease of North American cervids. Reindeer (Rangifer tarandus tarandus) are susceptible to CWD following oral challenge, but CWD has not been reported in free-ranging caribou (Rangifer tarandus caribou) or farmed reindeer. Potential contact between CWD-affected cervids and Rangifer species that are free-ranging or co-housed on farms presents a potential risk of CWD transmission. The aims of this study were to 1) investigate the transmission of CWD from white-tailed deer (Odocoileus virginianus; CWD-wtd), mule deer (Odocoileus hemionus; CWD-md), or elk (Cervus elaphus nelsoni; CWD-elk) to reindeer via the intracranial route, and 2) to assess for direct and indirect horizontal transmission to non-inoculated sentinels. Three groups of 5 reindeer fawns were challenged intracranially with CWD-wtd, CWD-md, or CWD-elk. Two years after challenge of inoculated reindeer, non-inoculated control reindeer were introduced into the same pen as the CWD-wtd inoculated reindeer (n=4) or into a pen adjacent to the CWD-md inoculated reindeer (n=2). Reindeer were allowed to develop clinical disease. At death/euthanasia a complete necropsy examination was performed, including immunohistochemical testing of tissues for disease-associated CWD prion protein (PrP-CWD). Intracranially challenged reindeer developed clinical disease from 21 months post-inoculation (MPI). ***PrP-CWD was detected in 5/6 sentinel reindeer although only 2/6 developed clinical disease during the study period (<57 and="" are="" both="" can="" cervid="" cwd="" directly="" div="" from="" have="" indirectly.="" mpi="" naive="" reindeer="" shown="" sources="" susceptible="" that="" to="" transmit="" various="" we="">
 
 
***PrP-CWD was detected in 5/6 sentinel reindeer although only 2/6 developed clinical disease during the study period (<57 and="" are="" both="" can="" cervid="" cwd="" directly="" div="" from="" have="" indirectly.="" mpi="" naive="" reindeer="" shown="" sources="" susceptible="" that="" to="" transmit="" various="" we="">
 
HIGHEST INFECTION RATE ON SEVERAL CWD CONFIRMED CAPTIVES
 
snip...see more here;
 
Tuesday, September 29, 2015
 
*** Transmission of chronic wasting disease to sentinel reindeer (Rangifer tarandus tarandus) can transmit CWD to naive reindeer both directly and indirectly
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
 
 
*** Infectious agent of sheep scrapie may persist in the environment for at least 16 years ***
 
Gudmundur Georgsson1, Sigurdur Sigurdarson2 and Paul Brown3
 
 
*** Spraker suggested an interesting explanation for the occurrence of CWD. The deer pens at the Foot Hills Campus were built some 30-40 years ago by a Dr. Bob Davis. At or abut that time, allegedly, some scrapie work was conducted at this site. When deer were introduced to the pens they occupied ground that had previously been occupied by sheep.
 
 
HIGHEST INFECTION RATE ON SEVERAL CWD CONFIRMED CAPTIVES
 
CHRONIC WASTING DISEASE CWD WISCONSIN Almond Deer (Buckhorn Flats) Farm Update DECEMBER 2011
 
The CWD infection rate was nearly 80%, the highest ever in a North American captive herd.
 
RECOMMENDATION: That the Board approve the purchase of 80 acres of land for $465,000 for the Statewide Wildlife Habitat Program in Portage County and approve the restrictions on public use of the site.
 
SUMMARY:
 
 
For Immediate Release Thursday, October 2, 2014
 
Dustin Vande Hoef 515/281-3375 or 515/326-1616 (cell) or Dustin.VandeHoef@IowaAgriculture.gov
 
*** TEST RESULTS FROM CAPTIVE DEER HERD WITH CHRONIC WASTING DISEASE RELEASED 79.8 percent of the deer tested positive for the disease
 
DES MOINES – The Iowa Department of Agriculture and Land Stewardship today announced that the test results from the depopulation of a quarantined captive deer herd in north-central Iowa showed that 284 of the 356 deer, or 79.8% of the herd, tested positive for Chronic Wasting Disease (CWD).
 
 
*** see history of this CWD blunder here ;
 
 
On June 5, 2013, DNR conducted a fence inspection, after gaining approval from surrounding landowners, and confirmed that the fenced had been cut or removed in at least four separate locations; that the fence had degraded and was failing to maintain the enclosure around the Quarantined Premises in at least one area; that at least three gates had been opened;and that deer tracks were visible in and around one of the open areas in the sand on both sides of the fence, evidencing movement of deer into the Quarantined Premises.
 
 
The overall incidence of clinical CWD in white-tailed deer was 82%
 
Species (cohort) CWD (cases/total) Incidence (%) Age at CWD death (mo)
 
 
”The occurrence of CWD must be viewed against the contest of the locations in which it occurred. It was an incidental and unwelcome complication of the respective wildlife research programmes. Despite it’s subsequent recognition as a new disease of cervids, therefore justifying direct investigation, no specific research funding was forthcoming. The USDA veiwed it as a wildlife problem and consequently not their province!” page 26.
 
 
Sunday, January 06, 2013
 
USDA TO PGC ONCE CAPTIVES ESCAPE
 
*** "it‘s no longer its business.”
 
 
CWD, spreading it around...
 
for the game farm industry, and their constituents, to continue to believe that they are _NOT_, and or insinuate that they have _NEVER_ been part of the problem, will only continue to help spread cwd. the game farming industry, from the shooting pens, to the urine mills, the antler mills, the sperm mills, velvet mills, shooting pens, to large ranches, are not the only problem, but it is painfully obvious that they have been part of the problem for decades and decades, just spreading it around, as with transportation and or exportation and or importation of cervids from game farming industry, and have been proven to spread cwd. no one need to look any further than South Korea blunder ;
 
===========================================
 
spreading cwd around...
 
Between 1996 and 2002, chronic wasting disease was diagnosed in 39 herds of farmed elk in Saskatchewan in a single epidemic. All of these herds were depopulated as part of the Canadian Food Inspection Agency’s (CFIA) disease eradication program. Animals, primarily over 12 mo of age, were tested for the presence CWD prions following euthanasia. Twenty-one of the herds were linked through movements of live animals with latent CWD from a single infected source herd in Saskatchewan, 17 through movements of animals from 7 of the secondarily infected herds.
 
***The source herd is believed to have become infected via importation of animals from a game farm in South Dakota where CWD was subsequently diagnosed (7,4). A wide range in herd prevalence of CWD at the time of herd depopulation of these herds was observed. Within-herd transmission was observed on some farms, while the disease remained confined to the introduced animals on other farms.
 
 
spreading cwd around...
 
Friday, May 13, 2011
 
Chronic Wasting Disease (CWD) outbreaks and surveillance program in the Republic of Korea
 
Hyun-Joo Sohn, Yoon-Hee Lee, Min-jeong Kim, Eun-Im Yun, Hyo-Jin Kim, Won-Yong Lee, Dong-Seob Tark, In- Soo Cho, Foreign Animal Disease Research Division, National Veterinary Research and Quarantine Service, Republic of Korea
 
Chronic wasting disease (CWD) has been recognized as an important prion disease in native North America deer and Rocky mountain elks. The disease is a unique member of the transmissible spongiform encephalopathies (TSEs), which naturally affects only a few species. CWD had been limited to USA and Canada until 2000.
 
On 28 December 2000, information from the Canadian government showed that a total of 95 elk had been exported from farms with CWD to Korea. These consisted of 23 elk in 1994 originating from the so-called “source farm” in Canada, and 72 elk in 1997, which had been held in pre export quarantine at the “source farm”.Based on export information of CWD suspected elk from Canada to Korea, CWD surveillance program was initiated by the Ministry of Agriculture and Forestry (MAF) in 2001.
 
All elks imported in 1997 were traced back, however elks imported in 1994 were impossible to identify. CWD control measures included stamping out of all animals in the affected farm, and thorough cleaning and disinfection of the premises. In addition, nationwide clinical surveillance of Korean native cervids, and improved measures to ensure reporting of CWD suspect cases were implemented.
 
Total of 9 elks were found to be affected. CWD was designated as a notifiable disease under the Act for Prevention of Livestock Epidemics in 2002.
 
Additional CWD cases - 12 elks and 2 elks - were diagnosed in 2004 and 2005.
 
Since February of 2005, when slaughtered elks were found to be positive, all slaughtered cervid for human consumption at abattoirs were designated as target of the CWD surveillance program. Currently, CWD laboratory testing is only conducted by National Reference Laboratory on CWD, which is the Foreign Animal Disease Division (FADD) of National Veterinary Research and Quarantine Service (NVRQS).
 
In July 2010, one out of 3 elks from Farm 1 which were slaughtered for the human consumption was confirmed as positive. Consequently, all cervid – 54 elks, 41 Sika deer and 5 Albino deer – were culled and one elk was found to be positive. Epidemiological investigations were conducted by Veterinary Epidemiology Division (VED) of NVRQS in collaboration with provincial veterinary services.
 
Epidemiologically related farms were found as 3 farms and all cervid at these farms were culled and subjected to CWD diagnosis. Three elks and 5 crossbreeds (Red deer and Sika deer) were confirmed as positive at farm 2.
 
All cervids at Farm 3 and Farm 4 – 15 elks and 47 elks – were culled and confirmed as negative.
 
Further epidemiological investigations showed that these CWD outbreaks were linked to the importation of elks from Canada in 1994 based on circumstantial evidences.
 
In December 2010, one elk was confirmed as positive at Farm 5. Consequently, all cervid – 3 elks, 11 Manchurian Sika deer and 20 Sika deer – were culled and one Manchurian Sika deer and seven Sika deer were found to be positive. This is the first report of CWD in these sub-species of deer. Epidemiological investigations found that the owner of the Farm 2 in CWD outbreaks in July 2010 had co-owned the Farm 5.
 
In addition, it was newly revealed that one positive elk was introduced from Farm 6 of Jinju-si Gyeongsang Namdo. All cervid – 19 elks, 15 crossbreed (species unknown) and 64 Sika deer – of Farm 6 were culled, but all confirmed as negative.
 
 
 
 
 
New studies on the heat resistance of hamster-adapted scrapie agent: Threshold survival after ashing at 600°C suggests an inorganic template of replication
 
The infectious agents responsible for transmissible spongiform encephalopathy (TSE) are notoriously resistant to most physical and chemical methods used for inactivating pathogens, including heat. It has long been recognized, for example, that boiling is ineffective and that higher temperatures are most efficient when combined with steam under pressure (i.e., autoclaving). As a means of decontamination, dry heat is used only at the extremely high temperatures achieved during incineration, usually in excess of 600°C. It has been assumed, without proof, that incineration totally inactivates the agents of TSE, whether of human or animal origin.
 
 
Prion Infected Meat-and-Bone Meal Is Still Infectious after Biodiesel Production
 
Histochemical analysis of hamster brains inoculated with the solid residue showed typical spongiform degeneration and vacuolation. Re-inoculation of these brains into a new cohort of hamsters led to onset of clinical scrapie symptoms within 75 days, suggesting that the specific infectivity of the prion protein was not changed during the biodiesel process. The biodiesel reaction cannot be considered a viable prion decontamination method for MBM, although we observed increased survival time of hamsters and reduced infectivity greater than 6 log orders in the solid MBM residue. Furthermore, results from our study compare for the first time prion detection by Western Blot versus an infectivity bioassay for analysis of biodiesel reaction products. We could show that biochemical analysis alone is insufficient for detection of prion infectivity after a biodiesel process.
 
 
Detection of protease-resistant cervid prion protein in water from a CWD-endemic area
 
The data presented here demonstrate that sPMCA can detect low levels of PrPCWD in the environment, corroborate previous biological and experimental data suggesting long term persistence of prions in the environment2,3 and imply that PrPCWD accumulation over time may contribute to transmission of CWD in areas where it has been endemic for decades. This work demonstrates the utility of sPMCA to evaluate other environmental water sources for PrPCWD, including smaller bodies of water such as vernal pools and wallows, where large numbers of cervids congregate and into which prions from infected animals may be shed and concentrated to infectious levels.
 
 
A Quantitative Assessment of the Amount of Prion Diverted to Category 1 Materials and Wastewater During Processing
 
Keywords:Abattoir;bovine spongiform encephalopathy;QRA;scrapie;TSE
 
In this article the development and parameterization of a quantitative assessment is described that estimates the amount of TSE infectivity that is present in a whole animal carcass (bovine spongiform encephalopathy [BSE] for cattle and classical/atypical scrapie for sheep and lambs) and the amounts that subsequently fall to the floor during processing at facilities that handle specified risk material (SRM). BSE in cattle was found to contain the most oral doses, with a mean of 9864 BO ID50s (310, 38840) in a whole carcass compared to a mean of 1851 OO ID50s (600, 4070) and 614 OO ID50s (155, 1509) for a sheep infected with classical and atypical scrapie, respectively. Lambs contained the least infectivity with a mean of 251 OO ID50s (83, 548) for classical scrapie and 1 OO ID50s (0.2, 2) for atypical scrapie. The highest amounts of infectivity falling to the floor and entering the drains from slaughtering a whole carcass at SRM facilities were found to be from cattle infected with BSE at rendering and large incineration facilities with 7.4 BO ID50s (0.1, 29), intermediate plants and small incinerators with a mean of 4.5 BO ID50s (0.1, 18), and collection centers, 3.6 BO ID50s (0.1, 14). The lowest amounts entering drains are from lambs infected with classical and atypical scrapie at intermediate plants and atypical scrapie at collection centers with a mean of 3 × 10−7 OO ID50s (2 × 10−8, 1 × 10−6) per carcass. The results of this model provide key inputs for the model in the companion paper published here.
 
 
PL1
 
Using in vitro prion replication for high sensitive detection of prions and prionlike proteins and for understanding mechanisms of transmission.
 
Claudio Soto
 
Mitchell Center for Alzheimer's diseases and related Brain disorders, Department of Neurology, University of Texas Medical School at Houston.
 
Prion and prion-like proteins are misfolded protein aggregates with the ability to selfpropagate to spread disease between cells, organs and in some cases across individuals. I n T r a n s m i s s i b l e s p o n g i f o r m encephalopathies (TSEs), prions are mostly composed by a misfolded form of the prion protein (PrPSc), which propagates by transmitting its misfolding to the normal prion protein (PrPC). The availability of a procedure to replicate prions in the laboratory may be important to study the mechanism of prion and prion-like spreading and to develop high sensitive detection of small quantities of misfolded proteins in biological fluids, tissues and environmental samples. Protein Misfolding Cyclic Amplification (PMCA) is a simple, fast and efficient methodology to mimic prion replication in the test tube. PMCA is a platform technology that may enable amplification of any prion-like misfolded protein aggregating through a seeding/nucleation process. In TSEs, PMCA is able to detect the equivalent of one single molecule of infectious PrPSc and propagate prions that maintain high infectivity, strain properties and species specificity. Using PMCA we have been able to detect PrPSc in blood and urine of experimentally infected animals and humans affected by vCJD with high sensitivity and specificity. Recently, we have expanded the principles of PMCA to amplify amyloid-beta (Aβ) and alphasynuclein (α-syn) aggregates implicated in Alzheimer's and Parkinson's diseases, respectively. Experiments are ongoing to study the utility of this technology to detect Aβ and α-syn aggregates in samples of CSF and blood from patients affected by these diseases.
 
=========================
 
***Recently, we have been using PMCA to study the role of environmental prion contamination on the horizontal spreading of TSEs. These experiments have focused on the study of the interaction of prions with plants and environmentally relevant surfaces. Our results show that plants (both leaves and roots) bind tightly to prions present in brain extracts and excreta (urine and feces) and retain even small quantities of PrPSc for long periods of time. Strikingly, ingestion of prioncontaminated leaves and roots produced disease with a 100% attack rate and an incubation period not substantially longer than feeding animals directly with scrapie brain homogenate. Furthermore, plants can uptake prions from contaminated soil and transport them to different parts of the plant tissue (stem and leaves). Similarly, prions bind tightly to a variety of environmentally relevant surfaces, including stones, wood, metals, plastic, glass, cement, etc. Prion contaminated surfaces efficiently transmit prion disease when these materials were directly injected into the brain of animals and strikingly when the contaminated surfaces were just placed in the animal cage. These findings demonstrate that environmental materials can efficiently bind infectious prions and act as carriers of infectivity, suggesting that they may play an important role in the horizontal transmission of the disease.
 
========================
 
Since its invention 13 years ago, PMCA has helped to answer fundamental questions of prion propagation and has broad applications in research areas including the food industry, blood bank safety and human and veterinary disease diagnosis.
 
 
see ;
 
 
 
 
 
 
98 | Veterinary Record | January 24, 2015
 
EDITORIAL
 
Scrapie: a particularly persistent pathogen
 
Cristina Acín
 
Resistant prions in the environment have been the sword of Damocles for scrapie control and eradication. Attempts to establish which physical and chemical agents could be applied to inactivate or moderate scrapie infectivity were initiated in the 1960s and 1970s,with the first study of this type focusing on the effect of heat treatment in reducing prion infectivity (Hunter and Millson 1964). Nowadays, most of the chemical procedures that aim to inactivate the prion protein are based on the method developed by Kimberlin and collaborators (1983). This procedure consists of treatment with 20,000 parts per million free chlorine solution, for a minimum of one hour, of all surfaces that need to be sterilised (in laboratories, lambing pens, slaughterhouses, and so on). Despite this, veterinarians and farmers may still ask a range of questions, such as ‘Is there an official procedure published somewhere?’ and ‘Is there an international organisation which recommends and defines the exact method of scrapie decontamination that must be applied?’
 
From a European perspective, it is difficult to find a treatment that could be applied, especially in relation to the disinfection of surfaces in lambing pens of affected flocks. A 999/2001 EU regulation on controlling spongiform encephalopathies (European Parliament and Council 2001) did not specify a particular decontamination measure to be used when an outbreak of scrapie is diagnosed. There is only a brief recommendation in Annex VII concerning the control and eradication of transmissible spongiform encephalopathies (TSE s).
 
Chapter B of the regulation explains the measures that must be applied if new caprine animals are to be introduced to a holding where a scrapie outbreak has previously been diagnosed. In that case, the statement indicates that caprine animals can be introduced ‘provided that a cleaning and disinfection of all animal housing on the premises has been carried out following destocking’.
 
Issues around cleaning and disinfection are common in prion prevention recommendations, but relevant authorities, veterinarians and farmers may have difficulties in finding the specific protocol which applies. The European Food and Safety Authority (EFSA ) published a detailed report about the efficacy of certain biocides, such as sodium hydroxide, sodium hypochlorite, guanidine and even a formulation of copper or iron metal ions in combination with hydrogen peroxide, against prions (EFSA 2009). The report was based on scientific evidence (Fichet and others 2004, Lemmer and others 2004, Gao and others 2006, Solassol and others 2006) but unfortunately the decontamination measures were not assessed under outbreak conditions.
 
The EFSA Panel on Biological Hazards recently published its conclusions on the scrapie situation in the EU after 10 years of monitoring and control of the disease in sheep and goats (EFSA 2014), and one of the most interesting findings was the Icelandic experience regarding the effect of disinfection in scrapie control. The Icelandic plan consisted of: culling scrapie-affected sheep or the whole flock in newly diagnosed outbreaks; deep cleaning and disinfection of stables, sheds, barns and equipment with high pressure washing followed by cleaning with 500 parts per million of hypochlorite; drying and treatment with 300 ppm of iodophor; and restocking was not permitted for at least two years. Even when all of these measures were implemented, scrapie recurred on several farms, indicating that the infectious agent survived for years in the environment, even as many as 16 years after restocking (Georgsson and others 2006).
 
In the rest of the countries considered in the EFSA (2014) report, recommendations for disinfection measures were not specifically defined at the government level. In the report, the only recommendation that is made for sheep is repopulation with sheep with scrapie-resistant genotypes. This reduces the risk of scrapie recurrence but it is difficult to know its effect on the infection.
 
Until the EFSA was established (in May 2003), scientific opinions about TSE s were provided by the Scientific Steering Committee (SSC) of the EC, whose advice regarding inactivation procedures focused on treating animal waste at high temperatures (150°C for three hours) and high pressure alkaline hydrolysis (SSC 2003). At the same time, the TSE Risk Management Subgroup of the Advisory Committee on Dangerous Pathogens (ACDP) in the UK published guidance on safe working and the prevention of TSE infection. Annex C of the ACDP report established that sodium hypochlorite was considered to be effective, but only if 20,000 ppm of available chlorine was present for at least one hour, which has practical limitations such as the release of chlorine gas, corrosion, incompatibility with formaldehyde, alcohols and acids, rapid inactivation of its active chemicals and the stability of dilutions (ACDP 2009).
 
In an international context, the World Organisation for Animal Health (OIE) does not recommend a specific disinfection protocol for prion agents in its Terrestrial Code or Manual. Chapter 4.13 of the Terrestrial Code, General recommendations on disinfection and disinsection (OIE 2014), focuses on foot-and-mouth disease virus, mycobacteria and Bacillus anthracis, but not on prion disinfection. Nevertheless, the last update published by the OIE on bovine spongiform encephalopathy (OIE 2012) indicates that few effective decontamination techniques are available to inactivate the agent on surfaces, and recommends the removal of all organic material and the use of sodium hydroxide, or a sodium hypochlorite solution containing 2 per cent available chlorine, for more than one hour at 20ºC.
 
The World Health Organization outlines guidelines for the control of TSE s, and also emphasises the importance of mechanically cleaning surfaces before disinfection with sodium hydroxide or sodium hypochlorite for one hour (WHO 1999).
 
Finally, the relevant agencies in both Canada and the USA suggest that the best treatments for surfaces potentially contaminated with prions are sodium hydroxide or sodium hypochlorite at 20,000 ppm. This is a 2 per cent solution, while most commercial household bleaches contain 5.25 per cent sodium hypochlorite. It is therefore recommended to dilute one part 5.25 per cent bleach with 1.5 parts water (CDC 2009, Canadian Food Inspection Agency 2013).
 
So what should we do about disinfection against prions? First, it is suggested that a single protocol be created by international authorities to homogenise inactivation procedures and enable their application in all scrapie-affected countries. Sodium hypochlorite with 20,000 ppm of available chlorine seems to be the procedure used in most countries, as noted in a paper summarised on p 99 of this issue of Veterinary Record (Hawkins and others 2015). But are we totally sure of its effectiveness as a preventive measure in a scrapie outbreak? Would an in-depth study of the recurrence of scrapie disease be needed?
 
What we can conclude is that, if we want to fight prion diseases, and specifically classical scrapie, we must focus on the accuracy of diagnosis, monitoring and surveillance; appropriate animal identification and control of movements; and, in the end, have homogeneous and suitable protocols to decontaminate and disinfect lambing barns, sheds and equipment available to veterinarians and farmers. Finally, further investigations into the resistance of prion proteins in the diversity of environmental surfaces are required.
 
References
 
snip...
 
98 | Veterinary Record | January 24, 2015
 
 
Persistence of ovine scrapie infectivity in a farm environment following cleaning and decontamination
 
Steve A. C. Hawkins, MIBiol, Pathology Department1, Hugh A. Simmons, BVSc MRCVS, MBA, MA Animal Services Unit1, Kevin C. Gough, BSc, PhD2 and Ben C. Maddison, BSc, PhD3 + Author Affiliations
 
1Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, UK 2School of Veterinary Medicine and Science, The University of Nottingham, Sutton Bonington, Loughborough, Leicestershire LE12 5RD, UK 3ADAS UK, School of Veterinary Medicine and Science, The University of Nottingham, Sutton Bonington, Loughborough, Leicestershire LE12 5RD, UK E-mail for correspondence: ben.maddison@adas.co.uk Abstract Scrapie of sheep/goats and chronic wasting disease of deer/elk are contagious prion diseases where environmental reservoirs are directly implicated in the transmission of disease. In this study, the effectiveness of recommended scrapie farm decontamination regimens was evaluated by a sheep bioassay using buildings naturally contaminated with scrapie. Pens within a farm building were treated with either 20,000 parts per million free chorine solution for one hour or were treated with the same but were followed by painting and full re-galvanisation or replacement of metalwork within the pen. Scrapie susceptible lambs of the PRNP genotype VRQ/VRQ were reared within these pens and their scrapie status was monitored by recto-anal mucosa-associated lymphoid tissue. All animals became infected over an 18-month period, even in the pen that had been subject to the most stringent decontamination process. These data suggest that recommended current guidelines for the decontamination of farm buildings following outbreaks of scrapie do little to reduce the titre of infectious scrapie material and that environmental recontamination could also be an issue associated with these premises.
 
SNIP...
 
Discussion
 
Thorough pressure washing of a pen had no effect on the amount of bioavailable scrapie infectivity (pen B). The routine removal of prions from surfaces within a laboratory setting is treatment for a minimum of one hour with 20,000 ppm free chlorine, a method originally based on the use of brain macerates from infected rodents to evaluate the effectiveness of decontamination (Kimberlin and others 1983). Further studies have also investigated the effectiveness of hypochlorite disinfection of metal surfaces to simulate the decontamination of surgical devices within a hospital setting. Such treatments with hypochlorite solution were able to reduce infectivity by 5.5 logs to lower than the sensitivity of the bioassay used (Lemmer and others 2004). Analogous treatment of the pen surfaces did not effectively remove the levels of scrapie infectivity over that of the control pens, indicating that this method of decontamination is not effective within a farm setting. This may be due to the high level of biological matrix that is present upon surfaces within the farm environment, which may reduce the amount of free chlorine available to inactivate any infectious prion. Remarkably 1/5 sheep introduced into pen D had also became scrapie positive within nine months, with all animals in this pen being RAMALT positive by 18 months of age. Pen D was no further away from the control pen (pen A) than any of the other pens within this barn. Localised hot spots of infectivity may be present within scrapie-contaminated environments, but it is unlikely that pen D area had an amount of scrapie contamination that was significantly different than the other areas within this building. Similarly, there were no differences in how the biosecurity of pen D was maintained, or how this pen was ventilated compared with the other pens. This observation, perhaps, indicates the slower kinetics of disease uptake within this pen and is consistent with a more thorough prion removal and recontamination. These observations may also account for the presence of inadvertent scrapie cases within other studies, where despite stringent biosecurity, control animals have become scrapie positive during challenge studies using barns that also housed scrapie-affected animals (Ryder and others 2009). The bioassay data indicate that the exposure of the sheep to a farm environment after decontamination efforts thought to be effective in removing scrapie is sufficient for the animals to become infected with scrapie. The main exposure routes within this scenario are likely to be via the oral route, during feeding and drinking, and respiratory and conjunctival routes. It has been demonstrated that scrapie infectivity can be efficiently transmitted via the nasal route in sheep (Hamir and others 2008), as is the case for CWD in both murine models and in white-tailed deer (Denkers and others 2010, 2013). Recently, it has also been demonstrated that CWD prions presented as dust when bound to the soil mineral montmorillonite can be infectious via the nasal route (Nichols and others 2013). When considering pens C and D, the actual source of the infectious agent in the pens is not known, it is possible that biologically relevant levels of prion survive on surfaces during the decontamination regimen (pen C). With the use of galvanising and painting (pen D) covering and sealing the surface of the pen, it is possible that scrapie material recontaminated the pens by the movement of infectious prions contained within dusts originating from other parts of the barn that were not decontaminated or from other areas of the farm.
 
Given that scrapie prions are widespread on the surfaces of affected farms (Maddison and others 2010a), irrespective of the source of the infectious prions in the pens, this study clearly highlights the difficulties that are faced with the effective removal of environmentally associated scrapie infectivity. This is likely to be paralleled in CWD which shows strong similarities to scrapie in terms of both the dissemination of prions into the environment and the facile mode of disease transmission. These data further contribute to the understanding that prion diseases can be highly transmissible between susceptible individuals not just by direct contact but through highly stable environmental reservoirs that are refractory to decontamination.
 
The presence of these environmentally associated prions in farm buildings make the control of these diseases a considerable challenge, especially in animal species such as goats where there is lack of genetic resistance to scrapie and, therefore, no scope to re-stock farms with animals that are resistant to scrapie.
 
Scrapie Sheep Goats Transmissible spongiform encephalopathies (TSE) Accepted October 12, 2014. Published Online First 31 October 2014
 
 
Monday, November 3, 2014
 
Persistence of ovine scrapie infectivity in a farm environment following cleaning and decontamination
 
 
PPo3-22:
 
Detection of Environmentally Associated PrPSc on a Farm with Endemic Scrapie
 
Ben C. Maddison,1 Claire A. Baker,1 Helen C. Rees,1 Linda A. Terry,2 Leigh Thorne,2 Susan J. Belworthy2 and Kevin C. Gough3 1ADAS-UK LTD; Department of Biology; University of Leicester; Leicester, UK; 2Veterinary Laboratories Agency; Surry, KT UK; 3Department of Veterinary Medicine and Science; University of Nottingham; Sutton Bonington, Loughborough UK
 
Key words: scrapie, evironmental persistence, sPMCA
 
Ovine scrapie shows considerable horizontal transmission, yet the routes of transmission and specifically the role of fomites in transmission remain poorly defined. Here we present biochemical data demonstrating that on a scrapie-affected sheep farm, scrapie prion contamination is widespread. It was anticipated at the outset that if prions contaminate the environment that they would be there at extremely low levels, as such the most sensitive method available for the detection of PrPSc, serial Protein Misfolding Cyclic Amplification (sPMCA), was used in this study. We investigated the distribution of environmental scrapie prions by applying ovine sPMCA to samples taken from a range of surfaces that were accessible to animals and could be collected by use of a wetted foam swab. Prion was amplified by sPMCA from a number of these environmental swab samples including those taken from metal, plastic and wooden surfaces, both in the indoor and outdoor environment. At the time of sampling there had been no sheep contact with these areas for at least 20 days prior to sampling indicating that prions persist for at least this duration in the environment. These data implicate inanimate objects as environmental reservoirs of prion infectivity which are likely to contribute to disease transmission.
 
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
 
Title: Transmission of scrapie prions to primate after an extended silent incubation period
 
Authors
 
item Comoy, Emmanuel - item Mikol, Jacqueline - item Luccantoni-Freire, Sophie - item Correia, Evelyne - item Lescoutra-Etchegaray, Nathalie - item Durand, Valérie - item Dehen, Capucine - item Andreoletti, Olivier - item Casalone, Cristina - item Richt, Juergen item Greenlee, Justin item Baron, Thierry - item Benestad, Sylvie - item Hills, Bob - item Brown, Paul - item Deslys, Jean-Philippe -
 
Submitted to: Scientific Reports Publication Type: Peer Reviewed Journal Publication Acceptance Date: May 28, 2015 Publication Date: June 30, 2015 Citation: Comoy, E.E., Mikol, J., Luccantoni-Freire, S., Correia, E., Lescoutra-Etchegaray, N., Durand, V., Dehen, C., Andreoletti, O., Casalone, C., Richt, J.A., Greenlee, J.J., Baron, T., Benestad, S., Brown, P., Deslys, J. 2015. Transmission of scrapie prions to primate after an extended silent incubation period. Scientific Reports. 5:11573. Interpretive Summary: The transmissible spongiform encephalopathies (also called prion diseases) are fatal neurodegenerative diseases that affect animals and humans. The agent of prion diseases is a misfolded form of the prion protein that is resistant to breakdown by the host cells. Since all mammals express prion protein on the surface of various cells such as neurons, all mammals are, in theory, capable of replicating prion diseases. One example of a prion disease, bovine spongiform encephalopathy (BSE; also called mad cow disease), has been shown to infect cattle, sheep, exotic undulates, cats, non-human primates, and humans when the new host is exposed to feeds or foods contaminated with the disease agent. The purpose of this study was to test whether non-human primates (cynomologous macaque) are susceptible to the agent of sheep scrapie. After an incubation period of approximately 10 years a macaque developed progressive clinical signs suggestive of neurologic disease. Upon postmortem examination and microscopic examination of tissues, there was a widespread distribution of lesions consistent with a transmissible spongiform encephalopathy. ***This information will have a scientific impact since it is the first study that demonstrates the transmission of scrapie to a non-human primate with a close genetic relationship to humans. This information is especially useful to regulatory officials and those involved with risk assessment of the potential transmission of animal prion diseases to humans.
 
Technical Abstract: Classical bovine spongiform encephalopathy (c-BSE) is an animal prion disease that also causes variant Creutzfeldt-Jakob disease in humans. Over the past decades, c-BSE's zoonotic potential has been the driving force in establishing extensive protective measures for animal and human health. In complement to the recent demonstration that humanized mice are susceptible to scrapie, we report here the first observation of direct transmission of a natural classical scrapie isolate to a macaque after a 10-year incubation period. Neuropathologic examination revealed all of the features of a prion disease: spongiform change, neuronal loss, and accumulation of PrPres throughout the CNS.
 
***This observation strengthens the questioning of the harmlessness of scrapie to humans, at a time when protective measures for human and animal health are being dismantled and reduced as c-BSE is considered controlled and being eradicated. Our results underscore the importance of precautionary and protective measures and the necessity for long-term experimental transmission studies to assess the zoonotic potential of other animal prion strains.
 
 
why do we not want to do TSE transmission studies on chimpanzees $
 
5. A positive result from a chimpanzee challenged severly would likely create alarm in some circles even if the result could not be interpreted for man. I have a view that all these agents could be transmitted provided a large enough dose by appropriate routes was given and the animals kept long enough. Until the mechanisms of the species barrier are more clearly understood it might be best to retain that hypothesis.
 
snip...
 
R. BRADLEY
 
 
Recently the question has again been brought up as to whether scrapie is transmissible to man. This has followed reports that the disease has been transmitted to primates. One particularly lurid speculation (Gajdusek 1977) conjectures that the agents of scrapie, kuru, Creutzfeldt-Jakob disease and transmissible encephalopathy of mink are varieties of a single "virus". The U.S. Department of Agriculture concluded that it could "no longer justify or permit scrapie-blood line and scrapie-exposed sheep and goats to be processed for human or animal food at slaughter or rendering plants" (ARC 84/77)" The problem is emphasized by the finding that some strains of scrapie produce lesions identical to the once which characterize the human dementias"
 
Whether true or not. the hypothesis that these agents might be transmissible to man raises two considerations. First, the safety of laboratory personnel requires prompt attention. Second, action such as the "scorched meat" policy of USDA makes the solution of the scrapie problem urgent if the sheep industry is not to suffer grievously.
 
snip...
 
76/10.12/4.6
 
 
Saturday, January 31, 2015
 
European red deer (Cervus elaphus elaphus) are susceptible to Bovine Spongiform Encephalopathy BSE by Oral Alimentary route
 
 
I strenuously once again urge the FDA and its industry constituents, to make it MANDATORY that all ruminant feed be banned to all ruminants, and this should include all cervids as soon as possible for the following reasons...
 
======
 
In the USA, under the Food and Drug Administrations BSE Feed Regulation (21 CFR 589.2000) most material (exceptions include milk, tallow, and gelatin) from deer and elk is prohibited for use in feed for ruminant animals. With regards to feed for non-ruminant animals, under FDA law, CWD positive deer may not be used for any animal feed or feed ingredients. For elk and deer considered at high risk for CWD, the FDA recommends that these animals do not enter the animal feed system.
 
***However, this recommendation is guidance and not a requirement by law.
 
======
 
31 Jan 2015 at 20:14 GMT
 
*** Ruminant feed ban for cervids in the United States? ***
 
31 Jan 2015 at 20:14 GMT
 
 
Monday, October 26, 2015
 
FDA PART 589 -- SUBSTANCES PROHIBITED FROM USE IN ANIMAL FOOD OR FEED VIOLATIONS OFFICIAL ACTION INDICATED OIA UPDATE October 2015
 
 
Sunday, October 25, 2015
 
USAHA Detailed Events Schedule – 119th USAHA Annual Meeting CAPTIVE LIVESTOCK CWD SCRAPIE TSE PRION
 
 
Monday, October 26, 2015
 
FDA PART 589 -- SUBSTANCES PROHIBITED FROM USE IN ANIMAL FOOD OR FEED VIOLATIONS OFFICIAL ACTION INDICATED OIA UPDATE October 2015
 
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES Title: Transmission of scrapie prions to primate after an extended silent incubation period Authors
 
item Comoy, Emmanuel - item Mikol, Jacqueline - item Luccantoni-Freire, Sophie - item Correia, Evelyne - item Lescoutra-Etchegaray, Nathalie - item Durand, Valérie - item Dehen, Capucine - item Andreoletti, Olivier - item Casalone, Cristina - item Richt, Juergen item Greenlee, Justin item Baron, Thierry - item Benestad, Sylvie - item Hills, Bob - item Brown, Paul - item Deslys, Jean-Philippe -
 
Submitted to: Scientific Reports Publication Type: Peer Reviewed Journal Publication Acceptance Date: May 28, 2015 Publication Date: June 30, 2015 Citation: Comoy, E.E., Mikol, J., Luccantoni-Freire, S., Correia, E., Lescoutra-Etchegaray, N., Durand, V., Dehen, C., Andreoletti, O., Casalone, C., Richt, J.A., Greenlee, J.J., Baron, T., Benestad, S., Brown, P., Deslys, J. 2015. Transmission of scrapie prions to primate after an extended silent incubation period. Scientific Reports. 5:11573. Interpretive Summary: The transmissible spongiform encephalopathies (also called prion diseases) are fatal neurodegenerative diseases that affect animals and humans. The agent of prion diseases is a misfolded form of the prion protein that is resistant to breakdown by the host cells. Since all mammals express prion protein on the surface of various cells such as neurons, all mammals are, in theory, capable of replicating prion diseases. One example of a prion disease, bovine spongiform encephalopathy (BSE; also called mad cow disease), has been shown to infect cattle, sheep, exotic undulates, cats, non-human primates, and humans when the new host is exposed to feeds or foods contaminated with the disease agent. The purpose of this study was to test whether non-human primates (cynomologous macaque) are susceptible to the agent of sheep scrapie. After an incubation period of approximately 10 years a macaque developed progressive clinical signs suggestive of neurologic disease. Upon postmortem examination and microscopic examination of tissues, there was a widespread distribution of lesions consistent with a transmissible spongiform encephalopathy. This information will have a scientific impact since it is the first study that demonstrates the transmission of scrapie to a non-human primate with a close genetic relationship to humans. This information is especially useful to regulatory officials and those involved with risk assessment of the potential transmission of animal prion diseases to humans.
 
Technical Abstract: Classical bovine spongiform encephalopathy (c-BSE) is an animal prion disease that also causes variant Creutzfeldt-Jakob disease in humans. Over the past decades, c-BSE's zoonotic potential has been the driving force in establishing extensive protective measures for animal and human health. In complement to the recent demonstration that humanized mice are susceptible to scrapie, we report here the first observation of direct transmission of a natural classical scrapie isolate to a macaque after a 10-year incubation period. Neuropathologic examination revealed all of the features of a prion disease: spongiform change, neuronal loss, and accumulation of PrPres throughout the CNS. This observation strengthens the questioning of the harmlessness of scrapie to humans, at a time when protective measures for human and animal health are being dismantled and reduced as c-BSE is considered controlled and being eradicated. Our results underscore the importance of precautionary and protective measures and the necessity for long-term experimental transmission studies to assess the zoonotic potential of other animal prion strains.
 
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES Title: Transmission of the agent of sheep scrapie to deer results in PrPSc with two distinct molecular profiles Authors
 
item Greenlee, Justin item Moore, Sarah - item Smith, Jodi item West Greenlee, Mary - item Kunkle, Robert
 
Submitted to: Prion Publication Type: Abstract Only Publication Acceptance Date: March 31, 2015 Publication Date: May 25, 2015 Citation: Greenlee, J., Moore, S.J., Smith, J.., West Greenlee, M.H., Kunkle, R. 2015.
 
Scrapie transmits to white-tailed deer by the oral route and has a molecular profile similar to chronic wasting disease and distinct from the scrapie inoculum. Prion 2015. p. S62. Technical Abstract: The purpose of this work was to determine susceptibility of white-tailed deer (WTD) to the agent of sheep scrapie and to compare the resultant PrPSc to that of the original inoculum and chronic wasting disease (CWD). We inoculated WTD by a natural route of exposure (concurrent oral and intranasal (IN); n=5) with a US scrapie isolate. All scrapie-inoculated deer had evidence of PrPSc accumulation. PrPSc was detected in lymphoid tissues at preclinical time points, and deer necropsied after 28 months post-inoculation had clinical signs, spongiform encephalopathy, and widespread distribution of PrPSc in neural and lymphoid tissues. Western blotting (WB) revealed PrPSc with 2 distinct molecular profiles. WB on cerebral cortex had a profile similar to the original scrapie inoculum, whereas WB of brainstem, cerebellum, or lymph nodes reveal PrPSc with a higher profile resembling CWD. Homogenates with the 2 distinct profiles from WTD with clinical scrapie were further passaged to mice expressing cervid prion protein and intranasally to sheep and WTD. In cervidized mice, the two inocula have distinct incubation times. Sheep inoculated intranasally with WTD derived scrapie developed disease, but only after inoculation with the inoculum that had a scrapie-like profile. The WTD study is ongoing, but deer in both inoculation groups are positive for PrPSc by rectal mucosal biopsy. In summary, this work demonstrates that WTD are susceptible to the agent of scrapie, two distinct molecular profiles of PrPSc are present in the tissues of affected deer, and inoculum of either profile type readily passes to deer.
 
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES Title: Scrapie transmits to white-tailed deer by the oral route and has a molecular profile similar to chronic wasting disease Authors
 
item Greenlee, Justin item Moore, S - item Smith, Jodi - item Kunkle, Robert item West Greenlee, M -
 
Submitted to: American College of Veterinary Pathologists Meeting Publication Type: Abstract Only Publication Acceptance Date: August 12, 2015 Publication Date: N/A
 
Technical Abstract: The purpose of this work was to determine susceptibility of white-tailed deer (WTD) to the agent of sheep scrapie and to compare the resultant PrPSc to that of the original inoculum and chronic wasting disease (CWD). We inoculated WTD by a natural route of exposure (concurrent oral and intranasal (IN); n=5) with a US scrapie isolate. All scrapie-inoculated deer had evidence of PrPSc accumulation. PrPSc was detected in lymphoid tissues at preclinical time points, and deer necropsied after 28 months post-inoculation had clinical signs, spongiform encephalopathy, and widespread distribution of PrPSc in neural and lymphoid tissues. Western blotting (WB) revealed PrPSc with 2 distinct molecular profiles. WB on cerebral cortex had a profile similar to the original scrapie inoculum, whereas WB of brainstem, cerebellum, or lymph nodes revealed PrPSc with a higher profile resembling CWD. Homogenates with the 2 distinct profiles from WTD with clinical scrapie were further passaged to mice expressing cervid prion protein and intranasally to sheep and WTD. In cervidized mice, the two inocula have distinct incubation times. Sheep inoculated intranasally with WTD derived scrapie developed disease, but only after inoculation with the inoculum that had a scrapie-like profile. The WTD study is ongoing, but deer in both inoculation groups are positive for PrPSc by rectal mucosal biopsy. In summary, this work demonstrates that WTD are susceptible to the agent of scrapie, two distinct molecular profiles of PrPSc are present in the tissues of affected deer, and inoculum of either profile readily passes to deer.
 
 
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES Title: Detection of PrP**CWD in retinal tissues in white-tailed deer (Odocoileus virginianus) and Rocky Mountain elk (Cervus elaphus nelsoni) with CWD Authors
 
item Spraker, Terry - COLORADO STATE UNIVERSITY item Gidleweski, Thomas - APHIS-VS, FORT COLLINS item Greenlee, Justin item Keane, Delwyn - WISCONSIN DIAGNOSTIC LAB item Hamir, Amirali item O'Rourke, Katherine
 
Submitted to: American Association of Veterinary Laboratory Diagnosticians Publication Type: Abstract Only Publication Acceptance Date: July 15, 2007 Publication Date: October 18, 2007 Citation: Spraker, T., Gidleweski, T., Greenlee, J., Keane, D., Hamir, A., Orourke, K. 2007. Detection of PrP**CWD in retinal tissues in white-tailed deer (Odocoileus virginianus) and Rocky Mountain elk (Cervus elaphus nelsoni) with CWD [abstract]. American Association of Veterinary Laboratory Diagnosticians 50th Annual Meeting. p. 47.
 
Technical Abstract: Introduction. Chronic wasting disease (CWD), a transmissible spongiform encephalopathy, has been reported in captive and free-ranging mule deer (Odocoileus hemionus hemionus), white-tailed deer (Odocoileus virginianus) and Rocky Mountain elk (Cervus elaphus nelsoni). An abnormal isoform of a prion protein (PrP**CWD) that has been associated with CWD has been reported in numerous internal organs other than the brain and lymphoid tissues, including the retina of mule deer. The objective of this project was to investigate the possibility of PrP**CWD in the retina of white-tailed deer and Rocky Mountain elk with CWD.
 
Materials and methods. Eyes from 80 captive white-tailed deer that were killed during a depopulation program were collected and placed in 10% neutral buffered formalin. None of these 80 white-tailed deer showed any clinical signs suggestive of CWD prior to euthanasia (gun shot); however 79% were positive for CWD by using immunohistochemical staining of the brain stem and head lymphoid tissues. Eyes from 7 captive and 2 research elk were collected and placed in Davison’s fixative. Clinical signs typical of CWD were observed in 5 elk (3 with M/M genotype, 1 M/L and 1 L/L). The other 4 were non-clinical (3 with genotype M/M and 1 L/L), but did have a previous positive rectal biopsy. The globe from each animal was trimmed and embedded in a single paraffin block and sectioned at 5 µm. Tissue sections were stained with H&E and immunostained with Anti-Prion 99 and P4 for the detection of PrP**CWD.
 
Results. Prion was only found in the retina, all other regions of the eye (cornea, lens, ciliary body, iris, choroid, sclera) were free of PrP**CWD in the deer. Examination of the eyes from the white-tailed deer revealed 4 to have detectable PrP**CWD within the retina. PrP**CWD was restricted to the inner and outer plexiform layers of these deer. Sections from all 9 elk had PrP**CWD in 8 of the 10 retinal layers and in the optic nerve. All other regions of the eye were free of PrP**CWD. The most prominent features in the elk were heavy PrP**CWD staining in the inner and outer plexiform layers with minimal intracytoplasmic staining in ganglion cells in the M/M and M/L elk. The 2 L/L elk had minimal PrP**CWD staining in the plexiform layers, but relatively heavy staining in the cytoplasm of ganglion cells and an unusual accumulation of PrP**CWD just inside outer limiting membrane layer. An occasional ganglion cell within the ganglion cell layer contained an intracytoplasmic vacuole in the M/M elk.
 
Discussion/Conclusion. Deer and elk do have an abundance of PrP**CWD in retinal tissues and optic nerve (elk). This accumulation of PrP**CWD may affect vision especially in elk. Genotypes did result in different patterns of PrP**CWD accumulation in elk. The LL genotype at codon 132, which has a prolonged incubation period, had much less PrP**CWD in the retina, especially within the inner and outer plexiform layers. In addition, the LL elk seemed to have more intracytoplasmic staining within ganglion cells as compared to the MM and ML elk.
 
 
Research Project: TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES: THE ROLE OF GENETICS, STRAIN VARIATION, AND ENVIRONMENTAL CONTAMINATION IN DISEASE CONTROL Title: Molecular genealogy tools for white-tailed deer with chronic wasting disease Authors
 
item Ernest, H - UC DAVIS item Hoar, B - UC DAVIS item Well, J - UC DAVIS item O'Rourke, Katherine
 
Submitted to: Canadian Journal of Veterinary Research Publication Type: Peer Reviewed Journal Publication Acceptance Date: October 14, 2009 Publication Date: May 4, 2010 Citation: Ernest, H., Hoar, B.R., Well, J.A., Orourke, K.I. 2010. Molecular genealogy tools for white-tailed deer with chronic wasting disease. Canadian Journal of Veterinary Research. 74(2):152-156. Interpretive
 
Summary: Chronic wasting disease (CWD) is a fatal degenerative brain disorder of deer, elk, and moose. The disease appears to be caused by prions, which are abnormally folded proteins formed in the lymph nodes and brain of infected deer after contact with an infected animal. The amount of time needed for transmission of disease is not known. White tailed deer live in family groups, with adult females and their female offspring spending much of the year together. Males leave the family group at adolescence and travel among groups during the breeding season. This social pattern supports a model in which disease is spread among females by repeated contact during the year and among groups by males visiting many groups during each breeding season. In this study, we developed a set of genetic tools to examine the family groups in a herd of white tailed deer in a fenced area in Nebraska. The density of deer was unusually high (more than 200 deer in 1.2 square miles, compared to less than 30 deer per square mile in forested areas of Wisconsin. Also, the rate of CWD was 50%, much higher than the 5% to 20% found in free ranging deer. We also tested a sample of deer ranging within 20 km of the fenced area. We tested the hypothesis that female deer within a family unit with a CWD-positive animal would have higher disease rates than male deer and that pairs of related animals would be more likely to have disease than unrelated deer. We used a large set of DNA markers to identify parents, siblings, aunts, and grandparents of the infected deer. Under these conditions, we did not see an increased rate of CWD among related deer. This finding may be due to the high density of deer or to the practice of providing food and water for the deer at various times of the year, encouraging the tight grouping of multiple families at the common feed and water areas. The DNA markers will be useful in examining herds of wild deer in more typical social groups.
 
Technical Abstract: Chronic wasting disease (CWD) is a transmissible spongiform encephalopathy or prion disease of deer, elk, and moose. CWD is a fatal neurologic disease with a long preclinical incubation period, during which the disease is probably transmitted to healthy animals through direct exposure or environmental contamination by the causative agent. Although the routes of infection are not known, the saliva and blood of deer contain the agent. Deer live in matrilineal groups as fawns, with males leaving the group at adolescence. The does and female progeny remain together much of the year. Adult males travel among groups during the breeding season, visiting as many groups as possible. This spatial grouping supports a model in which disease is spread by repeated exposure among females in a matrilineal group and transmitted among groups by males during the breeding season. In this study, we applied molecular genetic tools to reconstruct family relationship for a fenced herd of deer with a high CWD prevalence and for nearby free-ranging herds. We tested the hypotheses that females within first order (full sibs or parent-offspring) kin groups containing a CWD-positive adult female were more likely than males to test CWD positive and that dyads of CWD-positive individuals related in first order occurred at a higher frequency than predicted by chance alone. WE used a panel of 39 microsatellite markers and a set of mitochondrial sequences to provide kinship data for all deer in the fenced facility (n=200) and a sample of deer generally ranging within 20 km of the facility. In this system, we found no association between kinship and CWD status, although it is likely that the results were impacted by the high population density (200 deer in 1.2 square miles), the concentrated sources of feed and water during some times of the year, and the high disease prevalence. However, the study identifies a panel of genetic markers suitable for identifying first degree and second degree relatives. This panel will be useful in examining the disease patterns in the more typical settings of free ranging deer in areas with a density of fewer than 30 deer per square mile and disease prevalence of 15% to 30%.
 
 
 
*** PRION 2015 CONFERENCE FT. COLLINS CWD RISK FACTORS TO HUMANS ***
 
*** LATE-BREAKING ABSTRACTS PRION 2015 CONFERENCE ***
 
O18
 
Zoonotic Potential of CWD Prions
 
Liuting Qing1, Ignazio Cali1,2, Jue Yuan1, Shenghai Huang3, Diane Kofskey1, Pierluigi Gambetti1, Wenquan Zou1, Qingzhong Kong1 1Case Western Reserve University, Cleveland, Ohio, USA, 2Second University of Naples, Naples, Italy, 3Encore Health Resources, Houston, Texas, USA
 
***These results indicate that the CWD prion has the potential to infect human CNS and peripheral lymphoid tissues and that there might be asymptomatic human carriers of CWD infection.***
 
P.105: RT-QuIC models trans-species prion transmission
 
Kristen Davenport, Davin Henderson, Candace Mathiason, and Edward Hoover Prion Research Center; Colorado State University; Fort Collins, CO USA
 
Additionally, human rPrP was competent for conversion by CWD and fCWD.
 
***This insinuates that, at the level of protein:protein interactions, the barrier preventing transmission of CWD to humans is less robust than previously estimated.***
 
 
From: Terry S. Singeltary Sr.
 
Sent: Saturday, November 15, 2014 9:29 PM
 
To: Terry S. Singeltary Sr.
 
Subject: THE EPIDEMIOLOGY OF CREUTZFELDT-JAKOB DISEASE R. G. WILL 1984
 
THE EPIDEMIOLOGY OF CREUTZFELDT-JAKOB DISEASE
 
R. G. WILL
 
1984
 
*** The association between venison eating and risk of CJD shows similar pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK OF CJD (p = 0.04). (SEE LINK IN REPORT HERE...TSS) PLUS, THE CDC DID NOT PUT THIS WARNING OUT FOR THE WELL BEING OF THE DEER AND ELK ;
 
snip...
 
 
*** These results would seem to suggest that CWD does indeed have zoonotic potential, at least as judged by the compatibility of CWD prions and their human PrPC target. Furthermore, extrapolation from this simple in vitro assay suggests that if zoonotic CWD occurred, it would most likely effect those of the PRNP codon 129-MM genotype and that the PrPres type would be similar to that found in the most common subtype of sCJD (MM1).***
 
 
*** The potential impact of prion diseases on human health was greatly magnified by the recognition that interspecies transfer of BSE to humans by beef ingestion resulted in vCJD. While changes in animal feed constituents and slaughter practices appear to have curtailed vCJD, there is concern that CWD of free-ranging deer and elk in the U.S. might also cross the species barrier. Thus, consuming venison could be a source of human prion disease. Whether BSE and CWD represent interspecies scrapie transfer or are newly arisen prion diseases is unknown. Therefore, the possibility of transmission of prion disease through other food animals cannot be ruled out. There is evidence that vCJD can be transmitted through blood transfusion. There is likely a pool of unknown size of asymptomatic individuals infected with vCJD, and there may be asymptomatic individuals infected with the CWD equivalent. These circumstances represent a potential threat to blood, blood products, and plasma supplies.
 
 
now, let’s see what the authors said about this casual link, personal communications years ago. see where it is stated NO STRONG evidence. so, does this mean there IS casual evidence ???? “Our conclusion stating that we found no strong evidence of CWD transmission to humans”
 
From: TSS (216-119-163-189.ipset45.wt.net)
 
Subject: CWD aka MAD DEER/ELK TO HUMANS ???
 
Date: September 30, 2002 at 7:06 am PST
 
From: "Belay, Ermias"
 
To: Cc: "Race, Richard (NIH)" ; ; "Belay, Ermias"
 
Sent: Monday, September 30, 2002 9:22 AM
 
Subject: RE: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
 
Dear Sir/Madam,
 
In the Archives of Neurology you quoted (the abstract of which was attached to your email), we did not say CWD in humans will present like variant CJD. That assumption would be wrong. I encourage you to read the whole article and call me if you have questions or need more clarification (phone: 404-639-3091). Also, we do not claim that "no-one has ever been infected with prion disease from eating venison." Our conclusion stating that we found no strong evidence of CWD transmission to humans in the article you quoted or in any other forum is limited to the patients we investigated.
 
Ermias Belay, M.D. Centers for Disease Control and Prevention
 
-----Original Message-----
 
From: Sent: Sunday, September 29, 2002 10:15 AM
 
To: rr26k@nih.gov; rrace@niaid.nih.gov; ebb8@CDC.GOV
 
Subject: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
 
Sunday, November 10, 2002 6:26 PM ......snip........end..............TSS
 
Thursday, April 03, 2008
 
A prion disease of cervids: Chronic wasting disease 2008 1: Vet Res. 2008 Apr 3;39(4):41 A prion disease of cervids: Chronic wasting disease Sigurdson CJ.
 
snip...
 
*** twenty-seven CJD patients who regularly consumed venison were reported to the Surveillance Center***,
 
snip... full text ;
 
 
July's Milwaukee Journal Sentinel article did prod state officials to ask CDC to investigate the cases of the three men who shared wild game feasts. The two men the CDC is still investigating were 55 and 66 years old. But there's also Kevin Boss, a Minnesota hunter who ate Barron County venison and died of CJD at 41. And there's Jeff Schwan, whose Michigan Tech fraternity brothers used to bring venison sausage back to the frat house. His mother, Terry, says that in May 2001, Jeff, 26, began complaining about his vision. A friend noticed misspellings in his e-mail, which was totally unlike him. Jeff began losing weight. He became irritable and withdrawn. By the end of June, he couldn't remember the four-digit code to open the garage door or when and how to feed his parents' cats. At a family gathering in July, he stuck to his parents and girlfriend, barely talking. "On the night we took him to the hospital, he was speaking like he was drunk or high and I noticed his pupils were so dilated I couldn't see the irises," his mother says. By then, Jeff was no longer able to do even simple things on his computer at work, and "in the hospital, he couldn't drink enough water." When he died on September 27, 2001, an autopsy confirmed he had sporadic CJD.
 
In 2000, Belay looked into three CJD cases reported by The Denver Post, two hunters who ate meat from animals killed in Wyoming and the daughter of a hunter who ate venison from a plant that processed Colorado elk. All three died of CJD before they were 30 years old. The CDC asked the USDA to kill 1,000 deer and elk in the area where the men hunted. Belay and others reported their findings in the Archives of Neurology, writing that although "circumstances suggested a link between the three cases and chronic wasting disease, they could find no 'causal' link." Which means, says Belay, "not a single one of those 1,000 deer tested positive for CWD. For all we know, these cases may be CWD. What we have now doesn't indicate a connection. That's reassuring, but it would be wrong to say it will never happen."
 
So far, says NIH researcher Race, the two Wisconsin cases pinpointed by the newspaper look like spontaneous CJD. "But we don't know how CWD would look in human brains. It probably would look like some garden-variety sporadic CJD." What the CDC will do with these cases and four others (three from Colorado and Schwan from Upper Michigan), Race says, is "sequence the prion protein from these people, inject it into mice and wait to see what the disease looks like in their brains. That will take two years."
 
CJD is so rare in people under age 30, one case in a billion (leaving out medical mishaps), that four cases under 30 is "very high," says Colorado neurologist Bosque. "Then, if you add these other two from Wisconsin [cases in the newspaper], six cases of CJD in people associated with venison is very, very high." Only now, with Mary Riley, there are at least seven, and possibly eight, with Steve, her dining companion. "It's not critical mass that matters," however, Belay says. "One case would do it for me." The chance that two people who know each other would both contact CJD, like the two Wisconsin sportsmen, is so unlikely, experts say, it would happen only once in 140 years.
 
Given the incubation period for TSEs in humans, it may require another generation to write the final chapter on CWD in Wisconsin. "Does chronic wasting disease pass into humans? We'll be able to answer that in 2022," says Race. Meanwhile, the state has become part of an immense experiment.
 
 
I urge everyone to watch this video closely...terry
 
*** you can see video here and interview with Jeff's Mom, and scientist telling you to test everything and potential risk factors for humans ***
 
 
*** These results would seem to suggest that CWD does indeed have zoonotic potential, at least as judged by the compatibility of CWD prions and their human PrPC target. Furthermore, extrapolation from this simple in vitro assay suggests that if zoonotic CWD occurred, it would most likely effect those of the PRNP codon 129-MM genotype and that the PrPres type would be similar to that found in the most common subtype of sCJD (MM1).***
 
 
O.05: Transmission of prions to primates after extended silent incubation periods: Implications for BSE and scrapie risk assessment in human populations
 
Emmanuel Comoy, Jacqueline Mikol, Val erie Durand, Sophie Luccantoni, Evelyne Correia, Nathalie Lescoutra, Capucine Dehen, and Jean-Philippe Deslys Atomic Energy Commission; Fontenay-aux-Roses, France
 
Prion diseases (PD) are the unique neurodegenerative proteinopathies reputed to be transmissible under field conditions since decades. The transmission of Bovine Spongiform Encephalopathy (BSE) to humans evidenced that an animal PD might be zoonotic under appropriate conditions. Contrarily, in the absence of obvious (epidemiological or experimental) elements supporting a transmission or genetic predispositions, PD, like the other proteinopathies, are reputed to occur spontaneously (atpical animal prion strains, sporadic CJD summing 80% of human prion cases). Non-human primate models provided the first evidences supporting the transmissibiity of human prion strains and the zoonotic potential of BSE. Among them, cynomolgus macaques brought major information for BSE risk assessment for human health (Chen, 2014), according to their phylogenetic proximity to humans and extended lifetime. We used this model to assess the zoonotic potential of other animal PD from bovine, ovine and cervid origins even after very long silent incubation periods. *** We recently observed the direct transmission of a natural classical scrapie isolate to macaque after a 10-year silent incubation period, ***with features similar to some reported for human cases of sporadic CJD, albeit requiring fourfold longe incubation than BSE. Scrapie, as recently evoked in humanized mice (Cassard, 2014), ***is the third potentially zoonotic PD (with BSE and L-type BSE), ***thus questioning the origin of human sporadic cases. We will present an updated panorama of our different transmission studies and discuss the implications of such extended incubation periods on risk assessment of animal PD for human health.
 
===============
 
***thus questioning the origin of human sporadic cases...TSS
 
===============
 
 
Transmission of Creutzfeldt-Jakob disease to a chimpanzee by electrodes contaminated during neurosurgery.
 
Gibbs CJ Jr, Asher DM, Kobrine A, Amyx HL, Sulima MP, Gajdusek DC. Laboratory of Central Nervous System Studies, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892.
 
Stereotactic multicontact electrodes used to probe the cerebral cortex of a middle aged woman with progressive dementia were previously implicated in the accidental transmission of Creutzfeldt-Jakob disease (CJD) to two younger patients. The diagnoses of CJD have been confirmed for all three cases. More than two years after their last use in humans, after three cleanings and repeated sterilisation in ethanol and formaldehyde vapour, the electrodes were implanted in the cortex of a chimpanzee. Eighteen months later the animal became ill with CJD. This finding serves to re-emphasise the potential danger posed by reuse of instruments contaminated with the agents of spongiform encephalopathies, even after scrupulous attempts to clean them.
 
 
Tuesday, May 26, 2015
 
*** Minimise transmission risk of CJD and vCJD in healthcare settings ***
 
Last updated 15 May 2015
 
 
 
*** Creutzfeldt-Jakob Disease *** Public Health Crisis VIDEO
 
 
 
Diagnosis and Reporting of Creutzfeldt-Jakob Disease
 
Singeltary, Sr et al. JAMA.2001; 285: 733-734. Vol. 285 No. 6, February 14, 2001 JAMA
 
Diagnosis and Reporting of Creutzfeldt-Jakob Disease
 
To the Editor: In their Research Letter, Dr Gibbons and colleagues1 reported that the annual US death rate due to Creutzfeldt-Jakob disease (CJD) has been stable since 1985. These estimates, however, are based only on reported cases, and do not include misdiagnosed or preclinical cases. It seems to me that misdiagnosis alone would drastically change these figures. An unknown number of persons with a diagnosis of Alzheimer disease in fact may have CJD, although only a small number of these patients receive the postmortem examination necessary to make this diagnosis. Furthermore, only a few states have made CJD reportable. Human and animal transmissible spongiform encephalopathies should be reportable nationwide and internationally.
 
Terry S. Singeltary, Sr Bacliff, Tex
 
1. Gibbons RV, Holman RC, Belay ED, Schonberger LB. Creutzfeldt-Jakob disease in the United States: 1979-1998. JAMA. 2000;284:2322-2323.
 
 
 
cwd to humans, consumption, exposure, sub-clinical, iatrogenic, what if ?
 
Sunday, August 23, 2015
 
TAHC Chronic Wasting Disease CWD TSE Prion and how to put lipstick on a pig and take her to the dance in Texas
 
from the other side of the fence... today’s Singeltary Sunday School class ‘thinking outside of the box, God’s Wrath’ at the bottom. ...tss
 
 
TEXAS DEER CZAR SENT TO WISCONSIN TO SOLVE CWD CRISIS, WHILE ROME (TEXAS) BURNS
 
Tuesday, August 11, 2015
 
Wisconsin doing what it does best, procrastinating about CWD yet again thanks to Governor Walker
 
 
Wednesday, March 18, 2015
 
*** Chronic Wasting Disease CWD Confirmed Texas Trans Pecos March 18, 2015
 
 
Wednesday, March 25, 2015
 
*** Chronic Wasting Disease CWD Cases Confirmed In New Mexico 2013 and 2014 UPDATE 2015
 
 
Wednesday, July 01, 2015
 
*** TEXAS Chronic Wasting Disease Detected in Medina County Captive Deer
 
 
Tuesday, July 21, 2015
 
*** Texas CWD Medina County Herd Investigation Update July 16, 2015 ***
 
 
Thursday, August 06, 2015
 
*** WE HAVE LOST TEXAS TO CWD TASK FORCE CATERING TO INDUSTRY
 
 
Friday, August 07, 2015
 
*** Texas CWD Captive, and then there were 4 ?
 
 
Thursday, September 24, 2015
 
TEXAS Hunters Asked to Submit Samples for Chronic Wasting Disease CWD TSE Prion Testing
 
*** I cannot stress enough to all of you, for the sake of your family and mine, before putting anything in the freezer, have those deer tested for CWD. ...terry
 
 
Saturday, October 03, 2015
 
TEXAS CHRONIC WASTING DISEASE CWD TSE PRION GOD MUST NOT BE A TEXAN 2002 TO 2015
 
 
Friday, October 09, 2015
 
Texas TWA Chronic Wasting Disease TSE Prion Webinars and Meeting October 2015
 
 
Wednesday, October 21, 2015
 
TAHC CHRONIC WASTING DISEASE CWD TSE PRION REPORT OCTOBER 2015
 
 
a review since the TEXAS 84th Legislature commencing this January, deer breeders are expected to advocate for bills that will seek to further deregulate their industry...
 
Sunday, December 14, 2014
 
TEXAS 84th Legislature commencing this January, deer breeders are expected to advocate for bills that will seek to further deregulate their industry
 
 
Tuesday, December 16, 2014
 
Texas 84th Legislature 2015 H.R. No. 2597 Kuempel Deer Breeding Industry TAHC TPWD CWD TSE PRION
 
 
Friday, August 14, 2015
 
*** Susceptibility of cattle to the agent of chronic wasting disease from elk after intracranial inoculation
 
 
Friday, August 14, 2015
 
Carcass Management During a Mass Animal Health Emergency Draft Programmatic Environmental Impact Statement—August 2015
 
 
Tuesday, September 22, 2015
 
*** Host Determinants of Prion Strain Diversity Independent of Prion Protein Genotype
 
 
Friday, August 28, 2015
 
Chronic Wasting Disease CWD TSE Prion Diagnostics and subclinical infection
 
 
 
Sunday, October 18, 2015
 
*** World Organisation for Animal Health (OIE) and the Institut Pasteur Cooperating on animal disease and zoonosis research ***
 
 
Sunday, August 23, 2015
 
TAHC Chronic Wasting Disease CWD TSE Prion and how to put lipstick on a pig and take her to the dance in Texas from the other side of the fence...
 
today’s Singeltary Sunday School class ‘thinking outside of the box’ at the bottom. ...tss
 
Subject: Chronic Wasting Disease CWD TSE Prion and how to put lipstick on a pig and take her to the dance in Texas
 
I was listening to a radio show the other day here in the Galveston bay area, and outdoor show, they had a breeder or someone from the industry on, and I was amazed at the false information he was spewing. the part about the poor little girl with her pet deer crying in the breeder pen, ......cry me a friggen river, they are raising the damn deer to put in a pen to slaughter, or to breed for that purpose, AND you ought to see a human die from this shit. my mother did everything Linda Blair did in that movie the exorcist except spin her head 360 degrees. she DID levitate in bed because she would jerk so bad, where it took three grown strong adults to hold her down to keep her from hurting herself, all the while screaming God why can’t I stop this. so cry friggen river on a damn deer they are raising to have slaughtered, but whine because the TPWD et al are going to kill it to try and prevent the spread of disease cwd. if the TPWD et al had a better way of confirming or not whether those cervid had CWD, they would do it. the live tests they have to date do not work 100%, so there for they have not been validated. oh that’s fine with the pen owners, but it’s not fine for Texas. you don’t want a cwd test that just works part of the time. it’s total ignorance out there now, and they will put lipstick on this pig and take her to the dance, just like TAHC did with mad cow disease, and that’s well documented. they will change what ever law to meet their needs$$$ I will agree with this much of what the industry said this morning, that cwd has been in Texas for a long time, and in the pens to, and that the TAHC has not tested enough, that much he got correct. I have been saying this year, after year, after year, since back to 2001, to the TAHC, and told them exactly where they should be testing back in 2001, and then year after year after year, up and until 2012, where they finally did test there in enough numbers to find it a decade later, exactly where I been saying it was. the cwd deer have been waltzing across Texas from there for over a decade. it does not matter if I am pro-pen or not. that will not and does not change the science. why in the hell did they speak about the 4 confirmed deer from that index herd, yes, I said 4 now. why is not the TAHC TPWD telling that to the public now. why did not that guy today speak of 4? all the newspapers are reporting it, and I ask about the 4th case weeks and weeks ago? where is that information at on TAHC site? I am a meat eater, I am pro-hunt, and extremely pro-gun, I am however anti-stupid and anti-prion, prions can kill you, I don’t want to eat prions, you should not either. but here is the kicker, you eat meat infected with CWD TSE prion, your exposed, however you never go clinical in your life........BBBUT, your exposed and if you go on to have surgical, dental, tissue, blood donations, etc. you risk exposing my family and others...I will simply post this one short abstract of an old study the late great Dr. Gibbs...
 
snip...
 
Singeltary Sunday School Class o.k. I’m going to get Biblical today, it’s Sunday. I think the way I have interpreted the Bible to date, from the parts I have read and understood. God gave Man the duty of caretaker of the animals, and in that, we could eat them, while taking care of them. I think we have failed terribly in the way we take care of animals, the way we raise them for consumption. we failed God, and I think God is trying to tell us something here with CWD TSE prion. even with the scorched earth policy that I still say we must go by to date as much as I hate it, to eradicate CWD TSE prion, I think it’s all a part of Gods wrath, in that we have failed terribly as the stewards of the animails he told us to be, and has brought his wrath upon us, in the form of CWD TSE prion disease. we went from the hunt for food, the hunt to fill our freezers that God gave us, and in plenty. we went from that, to an industry crying about all those headless deer in Texas due to the fact it’s the only sure fire way to test for CWD with accuracy, to try and prevent a deadly disease in both animal and man, and to save the environment from further spread of CWD, yet these same people crying about all those headless deer will all rush to the taxidermist with a head to have mounted to fill ones wall full of heads. or you will have some poor breeder family, urine mill family, antler deer family, pen owner family, high/low fence owner family, sperm mill straw bred buck family, all crying because their pet deer are being slaughtered, yet in the long run, that’s just what they are raising the deer for anyone, to be slaughtered. I guess I don’t understand that part. ...I’m just thinking out of the box today, please understand I am still a meat eater, I guess just a bit disgusted with myself and others today. Sunday School class is over. carry on...
 
Sunday, August 23, 2015
 
TAHC Chronic Wasting Disease CWD TSE Prion and how to put lipstick on a pig and take her to the dance in Texas
 
from the other side of the fence... today’s Singeltary Sunday School class ‘thinking outside of the box, God’s Wrath’ at the bottom. ...tss
 
 
Under Texas law, though, breeder deer belong to the state, not the permittee. See, e.g., TEX. PARKS & WILD. CODE §§ 1.011 (“All wild animals . . . inside the borders of this state are the property of the people of this state.”); 43.364 (“All breeder deer . . . are under the full force of the laws of [Texas] pertaining to deer . . . .”). While a permittee may have possession of the breeder deer, the deer are only “held under a permit[.]” Id. § 43.351. Nowhere do the statutes or regulations state that breeder deer become the property of a permit holder.4
 
 
While a permittee may have possession of the breeder deer, the deer are only “held under a permit[.]” Id. § 43.351
 
 
 
just made a promise to mom DOD 12/14/97 confirmed hvCJD. never forget, and never let them forget. ...
 
Terry S. Singeltary Sr. Bacliff, Texas USA 77518 flounder9@verizon.net
 
Galveston Bay, on the bottom...