I've had the same thing happening, I'm afraid.
My girls had a bacterial infection, and after treating them for it I noticed that they would get what I thought was SBD, and then they'd just die.
Happened to one girl and I'm afraid that the others are going the same way. :'( So..not sure what to do.
Oh, cool.
Those kinds of people are always good to find.
We potatoes are doing well, thank you. My pets are doing as well as can be expected as a potato is trying to take care of them.