Sixty Farm Deer Test Positive For CWD Sixty of 76 deer killed at a Wisconsin game farm earlier this year tested positive for chronic wasting disease (CWD), reports The Capital Times. The U.S. Department of Agriculture had taken the deer at the Portage County farm on Jan. 17, after reaching an agreement with its owner. The state had wanted to eradicate the herd since the disease was discovered there in 2002, but the owner fought the case in court. The state believes the disease spread through the herd so extensively because of the 3 1/2-year court battle, the Associated Press reports.