Wow! I am so sorry to the extreme for your losses.
My concerns of the bat are, how many people have the resources to QT in a separate quarters? Very few, I bet. Which means proper QT guidelines will not be followed. But first, what is the prevalence of the virus? Was yours and the breeder's an isolated incident?
I applaud you for doing the right thing. What scares me is unscrupulous folks selling off knowingly sick pets to recoup their investment. And there lies the rub. It will multiply.
But again Qt compliance will be a big issue.
Thanks for the warning and again sorry for your loss.