Texas Hunting Forum

Chronic Wasting Disease A Time Bomb For Agriculture?

Posted By: flounder

Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 06:05 PM

WOW, i am shocked, this came from the PORK farm journal...

Chronic Wasting Disease A Time Bomb For Agriculture?

Chris Bennett, Farm Journal Media
January 30, 2018 11:25 AM

“Everyone at least needs to wake up to the potential of CWD to move in crops because it would shake up agriculture as we know it,” says David Clausen. ( © Herbert Lange, WDNR )
Is chronic wasting disease (CWD) a potential time bomb for the agriculture industry? A silent killer stalking deer and elk, CWD continues to move quietly across the U.S., with 22 states currently reporting CWD presence in free-ranging cervids.

CWD is a neural malady with devastating final-stage symptoms akin to mad cow disease. There is no direct proof of transmission via contaminated grain or feedstuffs, but researchers say accumulating evidence warrants a closer look at the possibility for potential disruption of multiple facets of the agriculture industry.

CWD is a guarantee of protracted death. Without exception, host deer slowly enter a zombie-like state characterized by extreme thirst, lack of mobility, loss of balance and near-total disorientation. CWD plays by a unique set of disease rules and does not spread by the common modes of infection (bacteria or virus), but is transmitted by a corrupted prion, essentially a misfolded protein. The corrupted prions multiply until the infection reaches the brain, destroying cells and attacking the central nervous system. Brain cells die in response to the presence of prions, creating holes in the brain.

“It’s a bad way to die. The animals are emaciated and waste away, and ultimately die from aspiration pneumonia because the swallowing reflex is affected and saliva gets into the lungs, or they freeze to death because they have no more body fat,” says Tracy Nichols, a molecular biologist and staff officer with USDA’s Veterinary Services Cervid Health Program in Fort Collins, Co.

On average whitetail deer have an approximate two-year CWD incubation period from infection to death. Although deer appear and act healthy for the vast majority of the disease duration, they can transmit CWD during nearly the entire span. (It is detectable in bodily fluids from infected animals as early as three months.) Deer directly contract CWD through infectious saliva, feces and urine, or indirectly via soil ingestion, foraging or a water source contaminated with prion proteins.

After initial detection in 1967 at a Colorado captive mule deer facility, CWD spread with a slow, but sure pace. Fifty years later, CWD has infected cervid populations in 181 counties across 22 states, according to the Centers for Disease Control and Prevention (CDC).

The geographic footprint of CWD continues to swell, likely through two different functions. One, slow diffusion from deer to deer in the wild. Two, faster movement through human-assisted spread by captive cervid farms or hunter-transported carcasses.

LANGE
Deer appear and act healthy for the vast majority of CWD duration, but can transmit the disease during nearly the entire span.

© HERBERT LANGE, WDNR

There are no known cases of natural transmission of CWD to domestic livestock. However, in laboratory conditions, CWD has been reproduced experimentally in cattle and swine, and research studies continue to examine crossover possibilities. There is no evidence of human crossover of CWD, although a 2017 studydocumented oral transmission of CWD to macaque monkeys. (Conducted in Canada, the study awaits peer review and publication.) Since 1997, the World Health Organization (WHO) has called for the exclusion of all prion disease material from the human and animal food chains.

“Mad cow disease crossed the species barrier to humans, but we haven’t seen evidence of CWD crossover. We can’t say crossover won’t happen in time, and as a precautionary measure WHO doesn’t want infected prions in the human or animal food chains,” says Bryan Richards, chronic wasting disease project leader for the U.S. Geological Survey (USGS) National Wildlife Health Center in Madison, Wis.

The possibility of CWD transmission beyond cervid populations remains an unanswered question, partly because different strains of CWD behave distinctly. “There is so much about CWD transmission we don’t know and so much yet to be studied. There are so many CWD unknowns related to brain matter, infectivity, prion stage, lymph nodes and more,” says David Clausen, a retired Wisconsin veterinarian, farmer, and former chair of the Wisconsin Natural Resources Board. Clausen presently serves as board president of Midwest Environmental Advocates.

The infectivity range of CWD is another significant unknown. When one species door is closed, another may serve as a Trojan horse. Hamsters were originally thought to be immune to CWD, while ferrets were easily infected. “Take deer CWD and infect the ferret. Take the ferret CWD and infect the hamster. Boom. The hamster can’t be infected by the deer, but is susceptible to the ferret. These prions are constantly evolving and changing,” Clausen explains.

“The question is sitting there: If CWD is able to get into livestock or swine, could it be transmitted in feedstuffs?” he adds.

Echoing Clausen’s query, is CWD passed along in agricultural plant matter exposed to urine, feces or carcass material? Prions form a chemical bond with plant surfaces and also bind to some soil particles, according to Richards. “After dipping plant leaves in prion proteins, researchers haven’t been able to wash off the prions. There isn’t enough science yet, but it’s been shown that plants can pick up proteins in the soil matrix through their roots and deposit those proteins in shoots and leaves, likely in flowers as well,” he explains. “Is the infectivity still there and is the concentration enough to transmit disease?”

USGS
CWD has infected cervid populations in 181 counties across 22 states, according to the Centers for Disease Control and Prevention.

© USGS

Uptake in a laboratory isn’t real-world confirmation, but Richards finds the implications disturbing. In addition, CWD expansion across the U.S. compounds the infectivity issue. “With the geographic footprint of CWD greatly expanded, we have to ask if plant material really moves infectious material. We have to contemplate the question because agriculture would be such a huge mechanism for disease movement,” he says.

In theory, take a county with a 40% CWD rate in a whitetail population. If 20 whitetail typically feed in-and-out of a given wheat field, eight of those deer are CWD-positive. An adult deer defecates roughly 12 times per day and urinates at a higher frequency. After harvest, if the wheat straw is rolled, statistical probability places a good deal of fecal material in the bales. “It’s not a far-fetched idea for infectious material to move in agricultural commodities,” Richards says. “This is not really on the ag industry radar, but it comes up regularly in conversations among scientists. We don’t know if transmission happens, but it must be kept on the radar screen.”

“There was once a time when people said mad cow disease could never cross the species barrier. Almost 300 human deaths and an industry disaster later, it’s pretty simple to see why we keep on conducting the science and relying strictly on what the evidence shows,” he adds.

Nichols cites several studies where plant roots grown in hydroponic or spiked soil solutions were exposed to CWD material. The stem and leaf tissue subsequently tested positive for infected prions, despite no contact with the CWD material. However, high levels of laboratory exposure don’t necessarily equate with field environments. “The results are disconcerting, but what really matters is what happens in the real world. The next level of inquiry is to find out if there is any threat via agriculture crops,” Nichols says.

“There is no scientific conclusion, but the questions raised could impact international trade. Right now, we don’t know what, if any, threat exists,” she continues.

Clausen takes a dim view of CWD containment and believes the disease will continue to creep into additional states: “I’m a country boy. Basic epidemiology of disease control is to contain and quarantine. Deer farm or deer carcass, we have to prevent the movement of all CWD material, dead or alive.”

LANGE
“With the geographic footprint of CWD greatly expanded, we have to ask if plant material really moves infectious material. We have to contemplate the question because agriculture would be such a huge mechanism for disease movement,” says Bryan Richards, USGS.

© HERBERT LANGE, WDNR

It is incumbent on the agriculture industry to consider the ramifications of CWD spread through agricultural commodities, according to Clausen. “Sometimes we just seem to bounce from crisis to crisis without enough preparation or foresight. Corn or alfalfa, CWD uptake has been demonstrated in plants. Whether the uptake is infectious, that research hasn’t been done.”

“Everyone at least needs to wake up to the potential of CWD to move in crops because it would shake up agriculture as we know it,” Clausen says. “We’re all responsible to take a precautionary approach and consider what could happen.”


https://www.porkbusiness.com/article/chronic-wasting-disease-time-bomb-agriculture


kind regards, terry
Posted By: Sneaky

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 06:11 PM

Here we go again.
Posted By: Bee'z

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 06:14 PM

popcorn
Posted By: jmh004

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 07:24 PM

Hey this guy isn't afraid to cite from wikipedia. Just saying.
Posted By: okietex

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 07:58 PM

Can I get cliff notes?
Posted By: Duck Buster

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/30/18 09:36 PM

Why are you surprised it came from a pork farm journal? They care about their crops, and they're becoming informed. Pork are fed grains, so it makes sense.

back

I find it interesting they are conducting this research. When I was working for TPWD this was a question I got regularly. It is a question people ask...how long does it stay infectious in nature, and can their animals get it if it is on a plant or on the ground? Its not that far of a step to ask if a plant can absorb and then spread the disease after being eaten, because of how long it persists in nature.

Zoonotic diseases can be a real threat. Better to know this now, than when its too late. Do you really want alfalfa or other grains to come from Montana or Idaho or Colorado or midwest with high rates of CWD, knowing that plants can be a carrier for cwd, or there is fecal matter from an animal with CWD, then feed it to your livestock? Or it being fed in feedlots to the beef you buy at the store?

Or don't even discuss it going from cervids to hogs or beef or goats- what about CWD fecal matter on deer corn that you put in your feeder, and infect your deer herd from fecal matter from other states? Does that spark a concern?

Economically and behaviorally, it is important to know this. I don't think regulations will stop the spread of CWD, but knowing it can be transferred this way may slow it.







Posted By: Sneaky

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 01:09 AM

Originally Posted By: okietex
Can I get cliff notes?


The sky is falling.
Posted By: maximus_flavius

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 02:28 AM

TL;DR
Posted By: therancher

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 02:56 AM

Originally Posted By: Duck Buster
Why are you surprised it came from a pork farm journal? They care about their crops, and they're becoming informed. Pork are fed grains, so it makes sense.

back

I find it interesting they are conducting this research. When I was working for TPWD this was a question I got regularly. It is a question people ask...how long does it stay infectious in nature, and can their animals get it if it is on a plant or on the ground? Its not that far of a step to ask if a plant can absorb and then spread the disease after being eaten, because of how long it persists in nature.

Zoonotic diseases can be a real threat. Better to know this now, than when its too late. Do you really want alfalfa or other grains to come from Montana or Idaho or Colorado or midwest with high rates of CWD, knowing that plants can be a carrier for cwd, or there is fecal matter from an animal with CWD, then feed it to your livestock? Or it being fed in feedlots to the beef you buy at the store?

Or don't even discuss it going from cervids to hogs or beef or goats- what about CWD fecal matter on deer corn that you put in your feeder, and infect your deer herd from fecal matter from other states? Does that spark a concern?

Economically and behaviorally, it is important to know this. I don't think regulations will stop the spread of CWD, but knowing it can be transferred this way may slow it.









They can’t MAKE it infect most cervids even implanting the prions directly into their brains. And you want me to believe it’s an issue to be concerned with in swine?? Lol

You’d have to be ignorant or short bussed to believe that.
Posted By: kyle1974

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 05:12 AM

hey mods, just curious... how many CWD panic attack threads does any one member get?


asking for a friend.
Posted By: Bee'z

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 06:42 AM

Careful...
Posted By: Pitchfork Predator

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 01:41 PM

Originally Posted By: Duck Buster
Why are you surprised it came from a pork farm journal? They care about their crops, and they're becoming informed. Pork are fed grains, so it makes sense.

back

I find it interesting they are conducting this research. When I was working for TPWD this was a question I got regularly. It is a question people ask...how long does it stay infectious in nature, and can their animals get it if it is on a plant or on the ground? Its not that far of a step to ask if a plant can absorb and then spread the disease after being eaten, because of how long it persists in nature.

Zoonotic diseases can be a real threat. Better to know this now, than when its too late. Do you really want alfalfa or other grains to come from Montana or Idaho or Colorado or midwest with high rates of CWD, knowing that plants can be a carrier for cwd, or there is fecal matter from an animal with CWD, then feed it to your livestock? Or it being fed in feedlots to the beef you buy at the store?

Or don't even discuss it going from cervids to hogs or beef or goats- what about CWD fecal matter on deer corn that you put in your feeder, and infect your deer herd from fecal matter from other states? Does that spark a concern?

Economically and behaviorally, it is important to know this. I don't think regulations will stop the spread of CWD, but knowing it can be transferred this way may slow it.









No concern whatsoever and I don't want my tax dollars going toward this research.
Posted By: BOBO the Clown

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 01:49 PM

Originally Posted By: okietex
Can I get cliff notes?


Flounder says become a vegan, but don’t eat alfalfa sprouts may have deer and elk pee and poop on it
Posted By: Duck Buster

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 07:43 PM

Originally Posted By: therancher
Originally Posted By: Duck Buster
Why are you surprised it came from a pork farm journal? They care about their crops, and they're becoming informed. Pork are fed grains, so it makes sense.

back

I find it interesting they are conducting this research. When I was working for TPWD this was a question I got regularly. It is a question people ask...how long does it stay infectious in nature, and can their animals get it if it is on a plant or on the ground? Its not that far of a step to ask if a plant can absorb and then spread the disease after being eaten, because of how long it persists in nature.

Zoonotic diseases can be a real threat. Better to know this now, than when its too late. Do you really want alfalfa or other grains to come from Montana or Idaho or Colorado or midwest with high rates of CWD, knowing that plants can be a carrier for cwd, or there is fecal matter from an animal with CWD, then feed it to your livestock? Or it being fed in feedlots to the beef you buy at the store?

Or don't even discuss it going from cervids to hogs or beef or goats- what about CWD fecal matter on deer corn that you put in your feeder, and infect your deer herd from fecal matter from other states? Does that spark a concern?

Economically and behaviorally, it is important to know this. I don't think regulations will stop the spread of CWD, but knowing it can be transferred this way may slow it.




They can’t MAKE it infect most cervids even implanting the prions directly into their brains. And you want me to believe it’s an issue to be concerned with in swine?? Lol

You’d have to be ignorant or short bussed to believe that.


from the article:
"However, in laboratory conditions, CWD has been reproduced experimentally in cattle and swine, and research studies continue to examine crossover possibilities."

So...it can be developed in swine. I'm not saying it will cross over, i'm just saying there could be a chance......so, am I ignorant, or do I ride the short bus because I read the article?

Just because it can be produced experimentally doesn't mean it will occur naturally...but it means there is a probability that it can.

I don't know about your source for it not being able to MAKE it infect cervids with prions directly into the brain, but i'd be willing to give it a read if you'd be willing to share.

What i found with a quick google search, and directed to this website:
http://cwd-info.org/cwd-overview/

"Susceptibility of other cervids to CWD is not known. Cattle appear to be resistant to natural infection; to date, only three of 13 cattle have become infected with the CWD agent following experimental intracerebral inoculation, although this and other experimental studies begun in 1997 are not yet completed. Susceptibility to the CWD agent has been documented in sheep through intracerebral inoculation, but no studies have been conducted to show that CWD can be transmitted to sheep through oral exposure or other vectors "

So chances are low, but my calculations (3/13 * 100)= 23% of cattle were infected with prions to the brain, and it is susceptible in sheep via prions to the brain.

I'm just saying what I've seen. Keep too many animals in too close a proximity eating and drinking from the same sources, diseases pop up sooner or later. Its the natural way of reducing densities.

I'm a skeptic too about whether or not fecal matter on vegetation contain enough prions, or vegetation itself can spread the disease. And I personally don't have the knowledge, desire, or ability to study it myself. But if it does, it would be nice to know, And enough people that care about their livestock, game animals, etc spoke up about wanting to know and are obviously concerned about this, or funding likely would not have been granted.


Posted By: therancher

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 09:15 PM

My source was TPWD. They cited the research in a public forum I attended. Axis, fallow and sika were inoculated and only sika developed the disease. Although there’s never been a natural infection found in sika, the state in its infinite wisdom have place them under cwd protocol just like deer and elk.

And justifying your opinion by saying the funding wouldn’t have been approved if a large part of the industry wasn’t concerned is weak at best.

I don’t know anyone in the industry who’s as concerned about cwd as much as they are a govt agency applying their collective ignorance to solve a non issue.
Posted By: D'hanis

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 10:14 PM

I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.
Posted By: Pitchfork Predator

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 10:21 PM

Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Just the opposite, I don't feel threatened at all by this. Personally, I think the OP's that make these posts are disappointed by that. What I find amusing but not interesting is how they throw out facts that are not facts at all. Like in this article they talk like they know for a fact where CWD started and where it's spread to since. That's 100% bs with no facts to prove it to be correct.
Posted By: D'hanis

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 01/31/18 10:26 PM

Originally Posted By: Pitchfork Predator
Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Just the opposite, I don't feel threatened at all by this. Personally, I think the OP's that make these posts are disappointed by that. What I find amusing but not interesting is how they throw out facts that are not facts at all. Like in this article they talk like they know for a fact where CWD started and where it's spread to since. That's 100% bs with no facts to prove it to be correct.


Maybe the OP is trying to stir the pot and I'm simply being naive confused2
Posted By: Duck Buster

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 12:07 AM

Originally Posted By: therancher
My source was TPWD. They cited the research in a public forum I attended. Axis, fallow and sika were inoculated and only sika developed the disease. Although there’s never been a natural infection found in sika, the state in its infinite wisdom have place them under cwd protocol just like deer and elk.

And justifying your opinion by saying the funding wouldn’t have been approved if a large part of the industry wasn’t concerned is weak at best.

I don’t know anyone in the industry who’s as concerned about cwd as much as they are a govt agency applying their collective ignorance to solve a non issue.


I do not wish to argue, I just aim to educate. Both myself, and others. And your stated results are ones I had not dug into, as I have not had a reason to look into exotics. So, I am learning more through this discussion and my associated searches. I did a google scholar search and found a couple likely sources where they got that information. And in some studies, they have the results you discuss and I do not doubt TPWD reported what you say. And for the most part it is correct. But some other research and studies reported some rates of transmission in exotics.

This one was in 2012: http://www.tandfonline.com/doi/abs/10.4161/pri.19640

"Many exotic cervid species have Prnp genes largely homologous with North American species, suggesting that Prnp divergence
would not be sufficient to avoid disease. This is born out by successful experimental infection of fallow deer and red deer.
However, cross-species infection may still be unlikely via natural routes. For example, despite susceptibility to experimental intracerebral
infection, fallow deer are relatively resistant to CWD infection when housed with infected mule deer. Still, potential for cross-species infection from other cervid species needs further investigation and suggests caution in the movement and management of exotic species."

So they were able to contract it cerebrally, but normal transmission is unknown. But suggest caution i movement of exotics.

In Korea, cases of CWD in red deer, sika deer, and elk had been found in farmed populations (Sohn HJ, Roh IS, Kim HJ, Suh TY, Park KJ, Park HC, Kim BH. Epidemiology of chronic wasting disease in Korea. Prion. 2016; 10:S16–S17.)

At the time or your public forum Sika may not have been found with CWD, and may still be the case in wild populations. But it has now been found in farmed populations. So you are correct from my short search about Sika deer not naturally occurring with CWD, but they can contract a form of it.

Out of curiosity, Why do you think CWD is a non-issue? And what industry are you referring to? animal husbandry, agriculture, or wildlife?



Anyways, back

The funding for the following sources comes from NIH and Canada agriculture organizations.

I did a quick search on plant transmission of CWD. Forgive me, but i have shorthanded the results to save space and time. I will gladly copy and paste exact quotes if you deem necessary, and have cited the sources I got them from.

This study (Jay Rasmussen, Brandon H Gilroyed, Tim Reuter, Sandor Dudas, Norman F Neumann, Aru Balachandran, Nat NV Kav, Catherine Graham, Stefanie Czub & Tim A McAllister (2014) Can plants serve as a vector for prions causing chronic wasting disease?, Prion, 8:1,
136-142) showed that the Prnp attach to roots, but is not transported into the stems of wheat in large enough quantities to be detected with their methods. But if Prnp were on the outside of the plant, it was detected.

A follow up study (Pritzkow et al. 2015, Grass plants bind, retain, uptake, and transport infectious prions, Cell Reports volume 11: pages 1168-1175) used barley grass to test the uptake. With their methods, they were able to detect infectious amounts of Prnp in the stems of all 4 plants, and at the top of the plant in the leaves (in 1 of 4 plants) after 3 weeks of growth.

Caveat: This study used brain material to infect the soil. They did not use feces or urine, so transmission and uptake levels likely vary.

So as to the original topic, there may be merit to studying if agriculture can spread CWD, even if it doesn't spread to humans or hogs. If it can be transferred inside plant material in infectious levels to other cervids, it may increase rates of transmission.
Posted By: Wytex

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 12:10 AM

I know of Zero cattle lost to CWD within 20 miles of Sybille Wildlife Research Center, Tom Thorne/Beth Williams research center where CWD originated in Wyoming. We are the epicenter in Wyoming and the sky is not falling.
We manage a ranch directly behind the high fence where elk die almost yearly from the disease. The same creek runs through the research facility and the ranch then downstream for miles. Zero cattle lost to CWD and no positive tests. It's been decades since it was brought to Sybille to study, only elk and deer have tested positive. They have bighorn sheep and moose in their pens exposed daily , all of their lives, no positives in moose or sheep. No workers at the facility, spouse worked there too, have test positive or have contracted variant CJD.
Why stir up hysteria. Come on up, I can get you into a conversation with some of the scientists who have been studying it for years.
The very ones who have a papers written and published on the subject.
Posted By: Duck Buster

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 12:22 AM

Originally Posted By: Pitchfork Predator
Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Just the opposite, I don't feel threatened at all by this. Personally, I think the OP's that make these posts are disappointed by that. What I find amusing but not interesting is how they throw out facts that are not facts at all. Like in this article they talk like they know for a fact where CWD started and where it's spread to since. That's 100% bs with no facts to prove it to be correct.


Threatened, no. Disappointed, yes.

You're right, they don't know exactly where it started. When diseases are in such low occurrences, its tough to nail down one place. And with a long period in an animal before the symptoms present themselves, its tough to follow the spread. That doesn't mean the effects aren't real.

I dont think D'hanis is all that far off. The sky isn't falling, but it will likely affect you, or the next generation. CWD is found in free-ranging deer in Texas. In low prevalence, but it is there. Sooner or later it will spread further into Texas with a higher prevalence through natural means. It will reduce the number of deer in those areas. Possibly to the point of no hunting. Sky won't completely fall, but the clouds may hang low. I say this because that is what has happened in other states.

Posted By: Rustler

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 12:47 AM

In which states has the wild deer herd been decimated by CWD?
Posted By: maximus_flavius

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 04:08 AM

Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Do you remember the "mad cow" scare in the '90's? The Y2K scare?

Those things never happened either, despite a bunch of false information & innuendo.

Kinda like Trump/Russia or Global Warming.

Out of all the [censored] to worry about, CWD is way down on the list.
Posted By: kyle1974

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 01:26 PM

I posted some death in the US stats the other day but it got locked down. I suppose wild eyed paranoia posts are fine, but realistic posts involving actual facts are shunned?

no one has ever been infected with CWD. so no one has ever died from it. millions of people die every year from heart disease and diabetes. stop worrying about being infected with CWD, and lay off the friggen mcdonalds. That's what's killing people. you're probably about a thousand times more likely to get killed in a car wreck, than for your deer to get CWD. and since there has never been a case of CWD being transmitted to a human, you guys do the math on that.

if we cared about deer dying, then maybe a post every once in a while about EHD could be warranted, but since it's passed around by flies, and the anti high fence/deer breeding people can't isolate flies to those types of ranches, no one gives a [censored] about it.

CWD is a political scare tactic being propagated by the anti deer breeding people in this state. I've said it dozens of times, but if places like the king ranch who are right in the middle of this fight were so worried about it, then why aren't they testing their deer? The real answer is everyone wants to stop it, but NO ONE wants to find it on their place.
Posted By: Pitchfork Predator

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 02:11 PM

Originally Posted By: Duck Buster
Originally Posted By: Pitchfork Predator
Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Just the opposite, I don't feel threatened at all by this. Personally, I think the OP's that make these posts are disappointed by that. What I find amusing but not interesting is how they throw out facts that are not facts at all. Like in this article they talk like they know for a fact where CWD started and where it's spread to since. That's 100% bs with no facts to prove it to be correct.


Threatened, no. Disappointed, yes.

You're right, they don't know exactly where it started. When diseases are in such low occurrences, its tough to nail down one place. And with a long period in an animal before the symptoms present themselves, its tough to follow the spread. That doesn't mean the effects aren't real.

I dont think D'hanis is all that far off. The sky isn't falling, but it will likely affect you, or the next generation. CWD is found in free-ranging deer in Texas. In low prevalence, but it is there. Sooner or later it will spread further into Texas with a higher prevalence through natural means. It will reduce the number of deer in those areas. Possibly to the point of no hunting. Sky won't completely fall, but the clouds may hang low. I say this because that is what has happened in other states.

Originally Posted By: Rustler
In which states has the wild deer herd been decimated by CWD?


Please post facts to support your statement. You can start by answering Rustler's question.

Cancer and heart disease have a much greater chance of affecting me and you. I want to see time, money and research devoted to solving these diseases before solving CWD. But there are people that work in labs and in the outdoors that want to hijack this disease for their monetary and political gain. They operate like the media, in that their strategy is to panic the public.
Posted By: BOBO the Clown

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 06:30 PM

Originally Posted By: maximus_flavius
Originally Posted By: D'hanis
I'm curious as to why so many people feel threatened by CWD literature. As hunters wouldn't we want to know all possible information regarding an issue that could potentially effect something we all love so much, regardless of whether or not it actually will happen.

Granted, I'm certainly not "the sky is falling type" and CWD isn't something I'm overly concerned with (and I hunt in the Medina county CWD containment area) I just don't see the issue here with the original post, I found it interesting personally.


Do you remember the "mad cow" scare in the '90's? The Y2K scare?

Those things never happened either, despite a bunch of false information & innuendo.

Kinda like Trump/Russia or Global Warming.

Out of all the [censored] to worry about, CWD is way down on the list.


Any cow buyer with any open ground and a good banker made a killing the day US Mad Cow hit the news stations.

I made almost a years income/salary in three months, it was a great year.

To this day I still think packing houses orchestrated it to lower prices. It worked
Posted By: flounder

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/01/18 09:13 PM

some additional information about the cwd transmission studies to pigs by ars et al.

CWD TO PIGS

Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES

Location: Virus and Prion Research

Title: Disease-associated prion protein detected in lymphoid tissues from pigs challenged with the agent of chronic wasting disease

Author item Moore, Sarah item Kunkle, Robert item Kondru, Naveen item Manne, Sireesha item Smith, Jodi item Kanthasamy, Anumantha item West Greenlee, M item Greenlee, Justin

Submitted to: Prion Publication Type: Abstract Only Publication Acceptance Date: 3/15/2017 Publication Date: N/A Citation: N/A Interpretive Summary:

Technical Abstract: Aims: Chronic wasting disease (CWD) is a naturally-occurring, fatal neurodegenerative disease of cervids. We previously demonstrated that disease-associated prion protein (PrPSc) can be detected in the brain and retina from pigs challenged intracranially or orally with the CWD agent. In that study, neurological signs consistent with prion disease were observed only in one pig: an intracranially challenged pig that was euthanized at 64 months post-challenge. The purpose of this study was to use an antigen-capture immunoassay (EIA) and real-time quaking-induced conversion (QuIC) to determine whether PrPSc is present in lymphoid tissues from pigs challenged with the CWD agent.

Methods: At two months of age, crossbred pigs were challenged by the intracranial route (n=20), oral route (n=19), or were left unchallenged (n=9). At approximately 6 months of age, the time at which commercial pigs reach market weight, half of the pigs in each group were culled (<6 month challenge groups). The remaining pigs (>6 month challenge groups) were allowed to incubate for up to 73 months post challenge (mpc). The retropharyngeal lymph node (RPLN) was screened for the presence of PrPSc by EIA and immunohistochemistry (IHC). The RPLN, palatine tonsil, and mesenteric lymph node (MLN) from 6-7 pigs per challenge group were also tested using EIA and QuIC.

Results: PrPSc was not detected by EIA and IHC in any RPLNs. All tonsils and MLNs were negative by IHC, though the MLN from one pig in the oral <6 month group was positive by EIA. PrPSc was detected by QuIC in at least one of the lymphoid tissues examined in 5/6 pigs in the intracranial <6 months group, 6/7 intracranial >6 months group, 5/6 pigs in the oral <6 months group, and 4/6 oral >6 months group. Overall, the MLN was positive in 14/19 (74%) of samples examined, the RPLN in 8/18 (44%), and the tonsil in 10/25 (40%). Conclusions:

This study demonstrates that PrPSc accumulates in lymphoid tissues from pigs challenged intracranially or orally with the CWD agent, and can be detected as early as 4 months after challenge.

CWD-infected pigs rarely develop clinical disease and if they do, they do so after a long incubation period. This raises the possibility that CWD-infected pigs could shed prions into their environment long before they develop clinical disease.

Furthermore, lymphoid tissues from CWD-infected pigs could present a potential source of CWD infectivity in the animal and human food chains.

https://www.ars.usda.gov/research/publications/publication/?seqNo115=337105

CONFIDENTIAL

EXPERIMENTAL PORCINE SPONGIFORM ENCEPHALOPATHY

While this clearly is a cause for concern we should not jump to the conclusion that this means that pigs will necessarily be infected by bone and meat meal fed by the oral route as is the case with cattle. ...

http://web.archive.org/web/20031026000118/www.bseinquiry.gov.uk/files/yb/1990/08/23004001.pdf

we cannot rule out the possibility that unrecognised subclinical spongiform encephalopathy could be present in British pigs though there is no evidence for this: only with parenteral/implantable pharmaceuticals/devices is the theoretical risk to humans of sufficient concern to consider any action.

http://web.archive.org/web/20030822031154/www.bseinquiry.gov.uk/files/yb/1990/09/10007001.pdf

Our records show that while some use is made of porcine materials in medicinal products, the only products which would appear to be in a hypothetically ''higher risk'' area are the adrenocorticotrophic hormone for which the source material comes from outside the United Kingdom, namely America China Sweden France and Germany. The products are manufactured by Ferring and Armour. A further product, ''Zenoderm Corium implant'' manufactured by Ethicon, makes use of porcine skin - which is not considered to be a ''high risk'' tissue, but one of its uses is described in the data sheet as ''in dural replacement''. This product is sourced from the United Kingdom.....

http://web.archive.org/web/20030822054419/www.bseinquiry.gov.uk/files/yb/1990/09/21009001.pdf

snip...see much more here ;

WEDNESDAY, APRIL 05, 2017

Disease-associated prion protein detected in lymphoid tissues from pigs challenged with the agent of chronic wasting disease

http://chronic-wasting-disease.blogspot.com/2017/04/disease-associated-prion-protein.html

WEDNESDAY, APRIL 05, 2017

*** Disease-associated prion protein detected in lymphoid tissues from pigs challenged with the agent of chronic wasting disease ***

http://chronic-wasting-disease.blogspot.com/2017/04/disease-associated-prion-protein.html

cattle are highly susceptible to white-tailed deer CWD and mule deer CWD

***In contrast, cattle are highly susceptible to white-tailed deer CWD and mule deer CWD in experimental conditions but no natural CWD infections in cattle have been reported (Sigurdson, 2008; Hamir et al., 2006). It is not known how susceptible humans are to CWD but given that the prion can be present in muscle, it is likely that humans have been exposed to the agent via consumption of venison (Sigurdson, 2008). Initial experimental research, however, suggests that human susceptibility to CWD is low and there may be a robust species barrier for CWD transmission to humans (Sigurdson, 2008). It is apparent, though, that CWD is affecting wild and farmed cervid populations in endemic areas with some deer populations decreasing as a result.

SNIP...

https://www.gov.uk/government/uploads/sy...ing-disease.pdf

price of prion poker goes up for cwd to cattle;

Monday, April 04, 2016
*** Limited amplification of chronic wasting disease prions in the peripheral tissues of intracerebrally inoculated cattle ***
http://chronic-wasting-disease.blogspot.com/2016/04/limited-amplification-of-chronic.html

*** 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.

http://cdmrp.army.mil/prevfunded/nprp/NPRP_Summit_Final_Report.pdf

http://bseusa.blogspot.com/2018/01/president-trump-kills-proposed-rule.html

TUESDAY, JANUARY 30, 2018

Colorado Chronic Wasting Disease CWD TSE Prion 7/2015-6/2016 Results (2017?)

http://chronic-wasting-disease.blogspot.com/2018/01/colorado-chronic-wasting-disease-cwd.html

Volume 23, Number 9—September 2017

Research Letter Chronic Wasting Disease Prion Strain Emergence and Host Range Expansion

***Thus, emergent CWD prion strains may have higher zoonotic potential than common strains.

https://wwwnc.cdc.gov/eid/article/23/9/16-1474_article

2017

Subject: ***CDC Now Recommends Strongly consider having the deer or elk tested for CWD before you eat the meat

CDC Now Recommends Strongly consider having the deer or elk tested for CWD before you eat the meat

Chronic Wasting Disease (CWD)

Prevention

* Strongly consider having the deer or elk tested for CWD before you eat the meat.

* If you have your deer or elk commercially processed, consider asking that your animal be processed individually to avoid mixing meat from multiple animals.

* If your animal tests positive for CWD, do not eat meat from that animal.

https://www.cdc.gov/prions/cwd/prevention.html

> However, to date, no CWD infections have been reported in people.

key word here is 'reported'. science has shown that CWD in humans will look like sporadic CJD. SO, how can one assume that CWD has not already transmitted to humans? they can't, and it's as simple as that. from all recorded science to date, CWD has already transmitted to humans, and it's being misdiagnosed as sporadic CJD. ...terry

LOOKING FOR CWD IN HUMANS AS nvCJD or as an ATYPICAL CJD, LOOKING IN ALL THE WRONG PLACES $$$

*** 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).***

http://www.tandfonline.com/doi/full/10.4161/pri.28124?src=recsys

http://www.tandfonline.com/doi/pdf/10.4161/pri.28124?needAccess=true

http://wwwnc.cdc.gov/eid/article/20/1/13-0858_article.htm

TUESDAY, SEPTEMBER 12, 2017

CDC Now Recommends Strongly consider having the deer or elk tested for CWD before you eat the meat

http://chronic-wasting-disease.blogspot.com/2017/09/cdc-now-recommends-strongly-consider.html

SATURDAY, JANUARY 27, 2018

CDC CHRONIC WASTING DISEASE CWD TSE PRION UPDATE REPORT USA JANUARY 2018

http://chronic-wasting-disease.blogspot.com/2018/01/cdc-chronic-wasting-disease-cwd-tse.html
Posted By: kyle1974

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 02:34 AM

I take it back about no one ever being afflicted with CWD. pretty sure flounder has it, and has it bad.
Posted By: passthru

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 02:39 AM

Ever heard of chicken little?
Posted By: Sneaky

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 02:53 AM

Originally Posted By: kyle1974
I take it back about no one ever being afflicted with CWD. pretty sure flounder has it, and has it bad.


roflmao
Posted By: Bee'z

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 03:07 AM

TLDR... trout
Posted By: kyle1974

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 03:17 AM

Originally Posted By: 2Beez
TLDR... trout


cliff notes?

flounder posted something done by people who received money to study CWD, and/or people who have a vested financial interest in shutting down deer breeding operations. however, flounder has no real interest in deer breeding, deer hunting, or even deer eating. He does have an interest in posting Excrutiatingly long posts, that basically say "we know CWD won't infect humans, but it's pretty scary, so we're gonna keep on, keepin on".
Posted By: Bee'z

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 03:32 AM

Originally Posted By: kyle1974
Originally Posted By: 2Beez
TLDR... trout


cliff notes?

flounder posted something done by people who received money to study CWD, and/or people who have a vested financial interest in shutting down deer breeding operations. however, flounder has no real interest in deer breeding, deer hunting, or even deer eating. He does have an interest in posting Excrutiatingly long posts, that basically say "we know CWD won't infect humans, but it's pretty scary, so we're gonna keep on, keepin on".


I appreciate you taking the time to type that up. You were correct... IDGAF. Thank you kind Sir cheers
Posted By: Shotgun Willie

Re: Chronic Wasting Disease A Time Bomb For Agriculture? - 02/02/18 05:08 PM

Originally Posted By: flounder
*** You are ignoring this user ***
Toggle the display of this post


Easy as that.
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