Millions of bats in North America have died from white-nose syndrome, and a new study from the University of Waterloo explores why and how the fungal disease has devastated bat populations on this continent, while it has had little effect on bats in Europe. The paper, "Strategies and limitations of the bat immune response to Pseudogymnoascus destructans: the causative agent of white-nose syndrome," appears in Frontiers in Immunology.