http://www.newsweek.com/deadly-highly-contagious-fungus-spreading-amphibians-worst-history-1788637 > A highly contagious and deadly fungal disease—considered the worst to affect wildlife in recorded history—is spreading, placing amphibians across an entire continent at risk. > The fatal disease, known as chytridiomycosis, is caused by a microscopic fungus called Batrachochytrium dendrobatidis (Bd). Infection with this fungus has a devastating effect on frogs, toads and other amphibians.