- Wisconsin remains free of a deadly bat disease.
Department of Natural Resources officials surveyed 73 Wisconsin locations where bats spend the winter.
They turned up no sign of white-nose syndrome.
The disease causes bats to wake up during hibernation and quickly deplete their energy stores.
It's killed more than a million bats in the U.S. and Canada since 2007.
Illinois has confirmed the disease in four counties this year.
The fungus that causes the disease turned up in an Iowa cave 30 miles from Wisconsin's border last year.
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Written By: Associated Press