Be sure to check out the maps in the following link. I was amazed when I saw the maps shown on this government website because they clearly show that bat
territories overlap the entire United States and much of Canada. If there was ever an explanation for the so called "jump" by WNS, this is it. If these maps
are accurate, WNS will eventually cover the entire US and most of Canada, barring a halt due to climate or some as yet unknown factor. No bat friendly cave gates could ever "protect" bats from WNS. Another map at the bottom of the page clearly shows the progression of WNS over the past few years. The lower map is a testament to the constant, steady progress of the disease that follows bat migration paths. The evidence presented is a testament to the fact that bats
spread WNS.
http://www.fort.usgs.gov/wns/