Michigan disease risk map.
Michigan confirmed its first captive-cervid CWD detection in 2008 and its first free-ranging detection in 2015. MI DNR runs a CWD Surveillance Area in the Lower Peninsula. Michigan has frequent EHD outbreak years, particularly in southern counties.
Disease detections, management zones, and transport rules change. Cross-reference this page with Michigan DNR 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 Michigan DNR.
Michigan county detections
11 counties with seeded CWD records. The agency may have additional positive counties — verify before each hunt.
| County | FIPS | First / Recent | Source | Quality |
|---|---|---|---|---|
| Montcalm County | 26117 | 2008 / 2024 | Agency → | Estimated — verify |
| Ingham County | 26065 | 2015 / 2024 | Agency → | Estimated — verify |
| Kent County | 26081 | 2017 / 2024 | Agency → | Estimated — verify |
| Mecosta County | 26107 | 2017 / 2024 | Agency → | Estimated — verify |
| Eaton County | 26045 | 2018 / 2024 | Agency → | Estimated — verify |
| Jackson County | 26075 | 2017 / 2024 | Agency → | Estimated — verify |
| Hillsdale County | 26059 | 2018 / 2024 | Agency → | Estimated — verify |
| Dickinson County | 26043 | 2018 / 2024 | Agency → | Estimated — verify |
| Clinton County | 26037 | 2019 / 2024 | Agency → | Estimated — verify |
| Gratiot County | 26057 | 2018 / 2024 | Agency → | Estimated — verify |
| Ionia County | 26067 | 2018 / 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 Michigan
Michigan has historically experienced frequent 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 — Michigan
Is it safe to eat deer harvested in Michigan?
Are there carcass transport restrictions in Michigan?
How do I get a deer tested for CWD in Michigan?
How often does Michigan get hit by EHD?
Where does Michigan's CWD/EHD data come from?
- Michigan DNR — CWD →
- Michigan DNR — 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.