The White Nose Syndrome fungus is actually endemic to Europe and Asia; it was just its introduction to the US that decimated the population. The fungus is found

The White Nose Syndrome fungus is actually endemic to Europe and Asia; it was just its introduction to the US that decimated the population. The fungus is found on European bats with no mortality. It seems the US bat population had no immunity. Cavers suspect that it was a tourist caver that picked up spores elsewhere and then went caving here. Many cavers stopped caving entirely to slow the spread.