The infections were reported by Arkansas, Wisconsin, and Manitoba, Canada.
Listen to a recording of our Dec 3, 2025, webinar on vertical CWD transmission. Experts discussed the implications of vertical transmission for free-ranging white-tailed deer herds, and Cory Anderson, PhD, MPH, of CIDRAP's CWD team, moderated a Q&A session after the discussion.
The report provides useful guidance to professionals at human, animal, and wildlife health agencies; academic researchers; and medical practitioners who will be tasked with responding to any human or non-cervid animal chronic wasting disease spillover.
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Wildlife-feeding and carcass-transportation restrictions are in place, because Wayne County was already included in the state’s CWD management zone.
The deer was harvested near the Berrien County line, about 14 miles from the nearest CWD-positive location.
CWD has now been found in free-ranging white-tailed deer in 18 counties in addition to Decatur.
The detections were the first for Tom Green County, in the west-central part of the state.
Deer Hunt Areas 106 and 150 are located in the northwestern part of the state and are gateways to Yellowstone National Park.
If the Prion and Public Health Office is shuttered, human CWD cases could go unnoticed, and it will be too late to mitigate the consequences, experts say.
The discovery was 92 miles from the nearest previous detection, in Cumberland County.
Previous deer-farm cases were documented in the southwestern county in 2014 and 2018.
In late summer, private landowners reported seeing the emaciated deer, which was euthanized and tested in September.
A hunter-harvested mule deer buck tested positive for CWD in Mule Deer Hunt Area 153 in the Pinedale region.
