Chytridiomycosis is too often blamed as the cause of death in captive frogs. Like John said, septicemia & ranavirus are more likely the culprits than chytrid is. I am always a bit sceptical when someone makes the statement that their frog has chytridiomycosis or has died from it.
As far as fungi go, chytrid is a rather weak organism. It is easily killed by chlorine found in tap water or by raising the temperature to the mid-nineties (F) for a period of three days. It can also be destroyed by desiccation. Frogs infected with the disease can be treated with itraconazole, but they will need to see the vet for this.
Most frog keepers often misdiagnose this disease. If you could tell me the exact symptoms, I should be able to tell you whether or not it is chytridiomycosis.