The USDA’s Animal and Plant Health Inspection Service (APHIS) on Friday announced new rules to limit the spread of chronic wasting disease (CWD), which affects cervids including deer, elk and moose. CWD is a lethal “transmissible spongiform encephalopathy” similar to BSE in cattle, although there is no evidence to date that CWD can spread to cattle or to humans.

The new interim final rule will establish a national CWD herd-certification program and minimum requirements for interstate movement of cervid animals in the United States.

Farmed or captive deer and elk have been, in numerous cases, implicated in the spread of CWD to wild herds, which has resulted in large-scale culling of animals and economic losses in areas where hunting generates significant revenue. According to APHIS, CWD has been reported in farmed or captive cervids in 11 states since testing began in 1997.