Chronic wasting disease (CWD) has become a significant challenge for Wisconsin’s wildlife, particularly its deer population. This fatal neurological disease affects deer, elk, and moose, causing progressive brain damage that leads to abnormal behavior, weight loss, and ultimately death. Since its discovery in Wisconsin in 2002, CWD has continued to spread, raising concerns among hunter, conservationists, and wildlife officials alike. Infected deer often become easy targets for predators due to their weakened state. This shift in predator-prey interactions can have cascading effects on the environment, altering the balance of species in affected regions. Additionally, the disease’s persistence in the environment through prions that remain infectious in soil and plants makes eradication efforts particularly challenging. But the DNR has implemented several measures to manage and mitigate the spread of CWD. The first measure is testing and monitoring. The DNR conducts extensive testing of deer harvested during hunting seasons to track the disease’s prevalence and spread. The second measure is baiting and feeding bans. To reduce the risk of transmission, baiting and feeding bans are enforced in areas with confirmed CWD cases. This limits the congregation of deer, which can facilitate the spread of the disease. The last measure is public awareness campaigns. Educating hunters and the general public about CWD is a critical component of the state’s strategy. Hunters are encouraged to have their deer tested and properly dispose of carcasses to prevent environmental contamination. While significant progress has been made in understanding CWD, much work remains to be done. Continued research is essential to develop effective strategies for managing the disease and protecting Wisconsin’s deer population. Collaboration between state agencies, hunters, conservationists, and researchers will be key to ensuring the long-term health of the state’s wildlife ecosystems. Chronic wasting disease is a reminder of the delicate balance within nature and the importance of proactive conservation efforts. By staying informed and engaged, Wisconsin residents can do their part in preventing the spread of chronic wasting disease.
Conservation Corner is a weekly article produced by the Forest County Land Conservation and Land Information Department. For more information contact Lucas O’Brien, Forest County Land Conservation Technician at 715-478-1387 or by e-mail at