Wisconsin wildlife officials say a third survey has turned up no signs a deadly bat disease has reached the state.
Department of Natural Resources officials say a survey of 73 hibernacula 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 and the fungus that causes the disease turned up in an Iowa cave 30 miles from Wisconsin's border last year.