Im rezurrecting an old topic (sorry). But I wanted to note that there has been strides to fight chytrid in aquatic frogs with Lamisil AT (athleats foot spray). It is easier to obtain than the previous treatment of BC.
You just get the spray and do 10 squirts per 200mL of water (dechlorinated). Put the frog in the bath for 5 min. Do this every day for 10 days and then quarenteen for another 2 weeks to watch for other illness.
If you do this with every frog you get you can avoid contaminating your tanks and aquarium instraments.
Here is the link:
http://www.flippersandfins.net/Lamisil.htm
Please, you should quarenteen anyway, but frogs for sure! If you do this you could save your new frog and any future frogs you would want to get!