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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The findings don't change the need for continued disease surveillance and research, experts say.
The disease had probably been in the state for some time, officials say.
A wild deer exhibiting signs of CWD tested positive for the fatal prion disease in mid-March.
The 4- to 5-year-old doe, which had shown signs of illness, was found in Spring Lake, near the Dunn and St. Croix county borders.
Further investigation revealed 3 additional deer with chronic wasting disease.
The Virginia Department of Wildlife Resources confirmed the fatal prion disease in a buck harvested by a hunter in November 2023.
The 3-year-old buck was found dead in the town of Wautoma, within 10 miles of the Marquette and Portage county borders.
Four white-tailed deer tested positive for the fatal neurodegenerative disease.
The buck was harvested near the border with Michigan, where CWD had already been detected.
Craighead County is in northeastern Arkansas, abutting Missouri and not far from the Tennessee border.
