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White-Nose Syndrome in North American Bats

April 22, 2025

U.S. Geological Survey (USGS) science has been critical in identifying the fungus, Pseudogymnoascus destructans (Pd), that causes white-nose syndrome (WNS). The Pd fungus infects the skin covering the muzzle, ears, and wings of hibernating bats. The fungus erodes deep into the vitally important skin of bat wings and fatally disrupts the hibernation of bats through physical damage and energy depletion as they try to cope with infection. Our scientists are tracking the fungus as it spreads and characterizing the effects of WNS on hibernating bat populations in North America.

The USGS is working with partners to study WNS and its impacts on bat populations, exploring new treatment options and efficacy, and developing methods for screening and surveillance. 

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