In utero transmission may contribute to the efficient spread of the fatal infection among deer populations, the study authors say.
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For the first time, chronic wasting disease has been detected in white-tailed deer in Manitoba—previous detections were in mule deer.
Testing done on samples from about 5,000 deer harvested in last year's hunting seasons in Iowa revealed that 84 deer were positive for CWD.
In North Carolina, officials confirm the first case detected outside of the state's surveillance area.
Trained dogs correctly identified CWD in 8 of 11 CWD-positive samples and had an average false-positive rate of 13%.
Earlier this month, officials confirmed CWD in Sheboygan County, and in January CWD was detected for the first time in Waupaca County.
The shortage is leading to delays in the testing of deer samples submitted by hunters.
The deer was a 2-year-old doe harvested by a hunter in the northwestern part of the county.
A buck brought to a taxidermist represents the first CWD case in Fairfax County, Virginia.
Researchers describe a CWD strain from a moose in Finland that's distinct not only from CWD prions in North America but also from those in neighboring Norway.
States and tribal wildlife agencies, which have struggled to contain the spread of chronic wasting disease, could then apply for funding for mitigation strategies such as testing.