"Wildlife biologists and land managers are alarmed by what many are saying is the most serious threat facing bat populations in human history: Tens of thousands of bats are dying in hibernacula in the northeastern United States and no one knows why. The mysterious affliction, reported from New Hampshire to Tennessee, is dubbed “white-nose syndrome” because many affected bats develop prominent halos of white fungus surrounding their faces. White-nose syndrome (WNS) was first reported during the winter of 2006-2007 in a few hibernation caves near Albany, New York, where more than 8,000 bats died" (read more here).
The fungus, Geomyces destructans, is an ananmorph of Pseudogymnoascus which belongs somewhere in the Dothideomycetes.
Danish bat – no desease (?)