An Unfortunate Loss

[Snakesitter]

I'd suspect an undiagnosed "source" issue here that resulted in the multiple small secondary infections, which in turn led to the regurg that alerted you to the problem. It's too bad they did not open up one of the granulomas (it is my understanding that reptile immune systems trap problem bacteria in such granulomas) and run a culture; while a long shot, it may have yielded some additional answers.

At any rate, it's all academic now -- so long as a through disinfection was done (which I am sure you did) and everyone else is healthy (and they seem to be), things should be fine.