Many species have become endangered due to the fungus, and in New York alone populations of the Little Brown bat (Myotis lucifugus) were reduced by 88% in a 5 year span¹. A once widespread common bat species is under the threat of extinction in Eastern America in less than 30 years and three other species could have the same fate².

¹Turner et al. 2011
²Frick et al. 2011