Can the Chytrid Fungus Be Passed to Humans?

There is no evidence that the chytrid fungus can be passed on to humans. This primitive organism is, however, responsible for the extinction, or near-extinction, of hundreds of frog species worldwide.

Types

• There are approximately 575 types of chytrids. The most common type causes the frog-killing Batrachochytrium dendrobatidis disease. All chytrids are single-celled organisms and part of the kingdom Protista.

Geography

• Chytrids have been found in every continent except Antarctica. They grow and reproduce in ponds, lakes, streams, soil and other areas where fresh water has accumulated.

Features

• Chytrids may be parasitic---meaning they feed off a live organism---or saprophytic---meaning they feed off organically rich dead matter. They thrive in warm temperatures and reproduce asexually.

Considerations

• Although humans can't be infected by chytrids, they can be affected by them. Chytrids that attach themselves to potatoes growing in rich, moist soil can cause Synchytrium endoboticum or potato wart---a condition that can infect potato fields, spread easily on equipment and boot bottoms, and cause large crops to decay.

Expert Insight

• Scientists haven't yet found a cure for Batrachochytrium dendrobatidis, but urge people to educate themselves about how they can help prevent frogs from dying. Ways to help keep chytrid fungus from spreading include: not taking frogs out of their natural habitats; only purchasing frogs from credible, regulated businesses; and cleaning off wet, muddy boots and fishing or camping equipment before moving from one fresh-water site to another.