The Mississippi Department of Wildlife, Fisheries, and Parks says three more cases of chronic wasting disease have been confirmed.

The executive director of the agency’s Wildlife Bureau, Russ Walsh, tells The Hattiesburg American that the cases were confirmed this week in Benton and Marshall counties. The fatal neurological disease affects deer, elk and moose.

So far, a total of 19 cases have been confirmed in Benton, Issaquena, Marshall, Panola, Pontotoc and Tallahatchie counties. Walsh says the recent cases in Panola and Tallahatchie counties were outside the current northern wasting disease management zone.

The zones bar supplemental feeding and the transportation of carcasses to outside zone boundaries to limit the spread of the disease. Walsh says the agency is now considering how to update the northern zone.