Chronic Wasting Disease (CWD) has been detected on the National Elk Refuge. Chronic wasting disease is a highly transmissible prion disease that affects cervids, including deer, elk, caribou and moose. In 2020, an elk in Grand Teton National Park tested positive for CWD. In response, the National Elk Refuge increased surveillance during all field operations to watch for animals displaying clinical signs of CWD; humanely killing and testing suspect animals; and coordinating public outreach with state, federal, and local partners. In spring 2026, two elk on the National Elk Refuge tested positive for CWD. 

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