Forget lions and tigers and bears. Viruses, bacteria and fungi pose a much bigger threat in the United States.

Fungi? There’s a new drug-resistant fungus, discovered in Japan only in 2009, that has become a major public health threat. It is called Candida auris, and according to the Centers for Disease Control and Prevention there had been 613 confirmed cases of disease caused by the fungus reported in the United States as of March 31, the latest figures available.