[hoodoo]

uh, you've got to be very very careful with that. It is believed that the desease can be transferred to the human.
There is no treatment to it and in my opinion not worth trying. In my opinion I would kill every fish that has this desease immidiately. And wear gloves.
I would use gloves every time from now on in your tank. The other fish might be infected by it too and if you have cuts or anything it could be bad for you. And watch EVERYTHING in your tank very carefully.

You should read about tuberculosis and find out if it really was the cause of death.