Wyoming disease risk map.
Wyoming has had CWD in wild populations since at least 1985. WY G&F runs surveillance across multiple hunt areas. CWD is endemic across significant portions of the state's mule deer and elk range.
Disease detections, management zones, and transport rules change. Cross-reference this page with Wyoming Game and Fish Department and the USDA APHIS distribution map before relying on it for hunting decisions.
CWD detection timeline
From first publicly-reported detection to the most recent year on record. Verify current detection counts with Wyoming Game and Fish Department.
Wyoming county detections
10 counties with seeded CWD records. The agency may have additional positive counties — verify before each hunt.
| County | FIPS | First / Recent | Source | Quality |
|---|---|---|---|---|
| Converse County | 56009 | 1985 / 2024 | Agency → | Estimated — verify |
| Albany County | 56001 | 1985 / 2024 | Agency → | Estimated — verify |
| Carbon County | 56007 | 1990 / 2024 | Agency → | Estimated — verify |
| Sheridan County | 56033 | 2003 / 2024 | Agency → | Estimated — verify |
| Sweetwater County | 56037 | 2002 / 2024 | Agency → | Estimated — verify |
| Park County | 56029 | 2008 / 2024 | Agency → | Estimated — verify |
| Niobrara County | 56027 | 1986 / 2024 | Agency → | Estimated — verify |
| Platte County | 56031 | 1995 / 2024 | Agency → | Estimated — verify |
| Natrona County | 56025 | 2001 / 2024 | Agency → | Estimated — verify |
| Fremont County | 56013 | 2008 / 2024 | Agency → | Estimated — verify |
County pages
Carcass transport rules
If hunting in a CWD-positive area, follow your state agency's carcass transport rules — most agencies prohibit moving whole carcasses with brain or spinal tissue across designated zone boundaries. Verify the current rules with your state wildlife agency before transporting any harvest.
CWD testing
Most state wildlife agencies offer free or low-cost CWD testing of harvested deer at check stations or sample-drop locations during season. Contact the state agency for current testing locations and turnaround times.
EHD activity in Wyoming
Wyoming has historically experienced occasional EHD activity. EHD is a viral disease transmitted by Culicoides midges and is not transmissible to humans — meat from EHD-affected deer is safe to consume per state agency guidance. Outbreak years correlate with hot, dry conditions; localized die-offs can reduce hunting opportunity for a season but do not persist year to year the way CWD does.
Hunter FAQ — Wyoming
Is it safe to eat deer harvested in Wyoming?
Are there carcass transport restrictions in Wyoming?
How do I get a deer tested for CWD in Wyoming?
How often does Wyoming get hit by EHD?
Where does Wyoming's CWD/EHD data come from?
- Wyoming Game and Fish Department — CWD →
- Wyoming Game and Fish Department — EHD →
- USDA APHIS CWD Distribution Map →
- National Deer Association EHD Tracker →
Disease information is summarized for hunter awareness only. Always cross-reference with the state agency for legal, regulatory, and current-detection data.
Track herd health on your land.
Statewide disease maps tell you what to expect in general. Bield: Hunt logs every sick or recovered deer you find on your specific property — and surfaces patterns across seasons that would otherwise live in your camera roll and your memory.