Archived posting to the Leica Users Group, 2010/04/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I think that these are still poorly understood diseases. I recall reading that "dogs cannot get mad cow disease". As a result, cattle dying from it are candidates for dog food. I gave one of my dogs some dog treats imported from the country that uses tainted beef in its dog food, and my dog died of some sort of encephalopathy within the year. And that dog treat brand disappeared from the shelves of stores for about 6 months. My father was a hospital administrator during the early 1980's. When AIDS became an entity, early conventional wisdom was that it was caused by an immune reaction to sperm entering the bloodstream via traumatic intercourse. Then it was a virus that could not be transmitted by blood transfusion. These diseases with slow incubation periods lead to some pretty erroneous assumptions. And science has a tendency to call something "right" when we are really saying "right, until proven wrong", and that happens regularly. Jeffery On Apr 2, 2010, at 9:34 PM, Greg Lorenzo wrote: > > Marty Devenny writes: > >> >> I'm well aware of CWD Greg, and the changes in the last 4 years - the >> disease is quite slow moving for a disease of a mobile wild host; in >> the 20 years or so since it was identified it hasn't spread very far >> at all. This map: >> http://www.cwd-info.org/index.php/fuseaction/about.map is up to date >> at 3/10 and is based on a wide range of surveys tools, not just from >> hunted deer. > > I agree that the above map is more up to date then the 1st one and I see > CWD is shown as having being found (state wide) in NY State on this map. > CWD (from memory) was 1st identified in NA more then 40 years ago (1968) > and first identified in the wild NY state deer population in 2002. > >> Also note that the prion that causes CWD is unrelated to those that >> cause disease in humans or other animals, making it unlikely that it >> was originally derived from consumption of human foods. >> http://wildlife.state.co.us/NR/rdonlyres/BF3BE1C5-5835-47E3-8737-5AA566AA5245/0/EID_CDWPotTrans.pdf > > Not sure what you mean by 'human foods'? I was referring to man-made > feeds. The presumed origin of CWD (and BSE) in my neck of the woods is > sheep scrapie. Some feed companies until a few years ago were using animal > byproducts including sheep by-product in cattle feed (no longer legally > allowed here since the discovery of BSE in an Alberta cattle herd). > > CWD has been a very significant problem in farm raised Elk both in > Alberta, Saskatchewan and in the three northern US States to the south of > us. Most ranchers that were raising elk here have either eliminated their > herds or gone out of business. > >> This review, although from 2002, is very interesting: >> http://www.oie.int/boutique/index.php?page=ficprod&id_prec=81&id_produit=619&lang=en&fichrech=1 >> >> Marty > > Agree, interesting, esp. wrt CJD in humans. > > Greg Lorenzo > Calgary, Canada > _________________________________________________________________ > Hotmail has tools for the New Busy. Search, chat and e-mail from your > inbox. > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_1 > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information