Go to Amphibian Ark and click on The Crisis and then Chytrid fungus. They have a very good article on chytrid and what it is doing to frog population around the world. There is also a documentary called The Thin Green Line that is a must see by every frog lover out there. I think it was made by PBS. The best two ways to keep chytrid out of your collection is by buying only captive bred frogs from a well known and respected breeder. The second way is to follow very strict quarantine procedures when you bring any new frog into your collection. Preferably the quarantined frog isn't even in the same room as the rest of your frog tanks. Do some research on some of the quarantine procedures and follow them. Its easier to prevent diseases from getting into your collection that it is to try to get rid of it once its there. Hope this helps....and check out that website.