CWD kills 25% of elk IN PENS CONTAMINATED WITH CWD
Subject: Wasting disease kills 25% of elk IN PENS CONTAMINATED WITH CWD 11 OF 43 IN FOUR YEARS
Date: February 16, 2006 at 10:20 am PST
WYOMING GAME AND FISH DEPARTMENT
CHRONIC WASTING DISEASE MANAGEMENT PLAN
February 17, 2006
5. Predicted population effects on free-ranging elk based on captive elk chronically exposed to the CWD prion.
Forty-three female elk calves were trapped at the National Elk Refuge and transported to Sybille in February 2002. Elk were housed in pens, assumed to be environmentally contaminated with the CWD prion. Elk will be held throughout their lifetimes. Elk dying will be examined and cause of death determined. From these data, it will should be possible to model free-ranging elk mortality and population dynamics under extreme circumstances of CWD prion exposure and transmission. As of December 2005 (46 months post capture), 11 of 43 elk have died due to CWD. This compares to 100% mortality in less than 25 months in elk orally inoculated with different dosages of the CWD prion.