Although Bs and Bd are both chytrid fungi, they are only distantly related at a genetic level: the researchers’ analysis suggests the two species diverged from one another approximately 30 million to 115 million years ago. The researchers also detected Bs in a museum specimen of a 150-year-old newt. When the group tested captive animals from pet shops in Europe and at an exporter’s store in Hong Kong for signs of disease, they found three of 1,765 Asian salamanders were infected with the fungus, but remained symptom-free.