Direct prion transmission likely predominates during breeding season, but indirect interactions may be more common at socially attractive sites such as scrapes, the authors say.
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The test may be useful in CWD surveillance, the authors say.
The dogs were able to identify infected deer through feces samples.
The case raises the number of states with documented chronic wasting disease in deer and other cervids to 35.
The infection in a 2-year-old doe was found during mandatory postmortem CWD surveillance testing.
The 2-year-old white-tailed doe tested positive during required CWD postmortem surveillance.
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.
