From this story on examiner.com:
_The Iowa Department of Natural Resources has confirmed Iowa's first documented case of chronic wasting disease in a white-tailed deer earlier this month.The infected deer was found in a hunting preserve in Davis County. The hunting preserve is surrounded by an eight foot high fence, and a quarantine has been issued for the facility. Iowa DNR has tested over 42,000 deer for CWD since 2000 as part of a CWD surveillance program. These efforts were greatly increased in 2002 after CWD was confirmed in Wisconsin and Illinois counties near the Iowa border.