 WNS has only recently been discovered, in Howe's Cave, New York during the winter of 2006-2007, but affects 25% of the hibernating species.Six species of bats have been fatally effected by this panzootic; big brown bat, small-footed bat, little brown bat, northern long-eared bat, Indiana bat, and tricolored bat, and current bat population surveys suggest a 2-year population decline in excess of 75%.The geographical range of WNS has spread throughout 33 states, and 4 Canadian provinces.