Chronic Wasting Disease (CWD) remains a serious threat to Wyoming’s big‑game populations. The disease, caused by abnormal prion proteins, attacks the central nervous system of mule deer, white‑tailed deer, elk and moose and is always fatal once an animal is infected.
Statewide prevalence and recent findings
First identified in Wyoming in 1985, CWD has now been detected in most wildlife management units across the state. Recent research shows noticeable declines in mule and white‑tailed deer numbers, while elk populations have been less affected and moose appear largely stable, with only a few detections reported.
Why sample collection matters
In the later stages of CWD, infected animals may show signs such as lethargy, drooping ears, excessive salivation, increased drinking and urination, and eventual death. However, the majority of CWD‑positive animals harvested by hunters look completely normal, because the disease can be present long before clinical signs appear. Early detection through laboratory testing is therefore essential for monitoring the spread and protecting future herds.
Sampling requirements for hunters
The Wyoming Game and Fish Department (WGFD) has designated specific hunt areas where sample submission is mandatory for every harvested deer. These mandatory zones include units 15, 34, 61, 74, 75, 76, 77, 82, 105, 106, 109, 157, 164 and 171. In additional “CWD monitoring focus” areas, sample submission is strongly advised. The department lists dozens of units for both deer and elk monitoring, encouraging hunters to participate wherever they hunt.
How to submit a sample
Hunters have three options for getting a sample to the state lab:
- Game check station: Staff are typically on hand to collect tissue from harvested animals.
- WGFD regional office: If personnel are not immediately available, hunters may need to leave the head and return later.
- Self‑collection: WGFD provides an instructional video showing how to locate and remove the appropriate lymph nodes. After collection, hunters can mail the sample to the Wildlife Health Laboratory or bring it to a regional Game and Fish office.
Even if a hunter is not in a designated mandatory or focus area, the department welcomes voluntary samples to aid ongoing research.
Protecting families and future hunting opportunities
For many Wyoming families, hunting is a cherished tradition that supports food security, outdoor stewardship and community bonding. By participating in CWD sampling, hunters help safeguard those traditions for future generations. The data gathered by WGFD informs management decisions, such as adjusting harvest limits or implementing targeted control measures, that aim to preserve healthy wildlife populations.
What you can do
Before heading out, review the latest WGFD map of mandatory and focus units. Carry the sampling kit, watch the step‑by‑step video, and plan to submit your sample promptly. For more information, visit the Wyoming Game and Fish Department website or contact your local regional office.
Original reporting: K2 Radio (Casper) — read the source article.
