Antler333 said:As Autry has shown in the CWD Alliance timeline. CWD, as it is current know, has been around for over 40 years.
While there certainly could be spontaneous CWD, just like there is spontaneous CJD in humans, the presence of that time line suggests, but does not confirm, that CWD in its current form CAN be transmitted as well.
Unfortunately, the current data suggests that the form of CWD found in all these new areas "appears" to be the same or a similar strain to that found in Colorado originally, and since Co State University and the CO Div of Wildlife shipped live animals and diseased tissue to several places around the country, many of those occurances can be explained by sloppy govt handling of infected animals or tissues. Certainly WI can be explained that way.
Also, since wild shot carcasses have been harvested from NE Colorado for decades and certainly some of those heads and bones and maybe guts and things have ended up dumped around the country, then CWD may have been planted in literally hundreds of areas. If those carcasses were postive for CWD, then that area of any state could be a point source for CWD. the NY occurances seem to have come from a taxidemist that had worked on CO shot animals. INsect transmisson can explain the New Mexico occurances.
Now, is CWD always fatal. Well, YES if you consider that to test a brain you have to kill the animal! But is it fatal if infected, I am not so sure. ONLY if the disease agent reaches the nervous system and hence the brain, is it fatal. I personally beleive that you can surpress the disease with antibiotics, and in fact some animals are seemingly immune to it. (studies of genetic L vs M type elk, for example). If animals can be immune and if antibiotics suppress the disease, then this worrisome prion theory is potentially BUNK! The animals seem to react to it the same way they do to other diseases, just they are more diffiult to diagnose.
CWD has no effect on any other wildlife other than the Deer species. Scrapie, also a TSE disease can affect sheep and goats both wild and domestic. BSE so far has been found in beef and I beleive a musk ox or another kind of bovine. Id have to check on that one.
the worry is (hence the eratification efforts) is that it is a cousin of Mad Cow disease which caused a deaded brain disease in humans (about 200 people out of what? 100 million that had eaten the meat of ~100,000 infect beefs). Not exactly a major disease, JUST a deadful one.
As our current chief of staff at the Whitehouse has said. You never want to let a good crisis go to waste. FREE MONEY FOR ALL GOVT AGENCIES that work on it!
Hello all, just thought I'd toss in my two cents worth since I work with CWD.
As far as we know CWD is fatal 100% of the time- the disease can sometimes be slowed with antibiotics but this is because most deaths that are attributed to CWD are, in fact, caused by secondary infections (usually aspiration pneumonia). If the disease is allowed to progress, even with plenty of antibiotics, it will eventually cause the death of the animal as the nervous system becomes more and more damaged- we have yet to see an animal which tested positive and did not eventually die of CWD or related complications. It is possible that, at some time in the future, there may be some way to treat CWD but for now there are no viable treatment options (but we're working on a few). We do have live animal tests for both deer and elk so the test is no longer fatal. As for the genetic immunity, the ML vs MM genotype in elk is thought to have some effect on the disease but it does not give them immunity. They may be somewhat more resistant but they are not completely immune (I've personally observed an elk of the resistant genotype die from CWD). I do agree that CWD has probably been around a lot longer than we've known about it and that the only reason it seems to be spreading is that we know where to look for it now.