Bats That Are Affected

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WNS affects at least 6 known insectivorous cave roosting bats of North America¹, Myotis lucifugus, Eptesicus fuscus, Myotis septentrionalis, Tri-colored bat (eastern pipistrelle) Perimyotis subflavas, Myotis sodalis, and Myotis leibii ². This mortality has caused population declines ranging from 72 to 88% for some bat species inhabiting the northeastern United States. Since 2007, the disease has spread across 28 States, and 5 Canadian provinces³. An estimated 5.5 million bats have already died from WNS. 

¹Foley et al. 2011
²Johnson et al 2013
³Lorch et al 2013, Figure 1