Conservation Commission approves CWD regulation changes by MDC JEFFERSON CITY, Mo. — The Missouri Conservation Commission recently approved proposed regulation changes from the Missouri Department of Conservation (MDC) related to chronic wasting disease (CWD) surveillance and management efforts. The changes were approved at the Commission’s May 21 open meeting. They add four counties to the CWD Management Zone and reinstate mandatory CWD sampling requirements. The approved MDC regulations add Camden, Laclede, McDonald, and Pulaski counties to the CWD Management Zone. The four counties were added to the Zone due to CWD being found in or near them. With the additional counties, the CWD Management Zone consists of 34 counties in or near where CWD has been found.