Gosh, what a horrible happening.

As far as I know, there are different strains of FIP and some strains are more toxic than others.

As far as I know, the only way to be sure that you are not continuing the process is to clear you home of cats - not bring anymore in, and after the existing cats are "gone", leave time, clean like a crazy person and then allow new cats in......but let lots of time go by. I think weeks.

There are some tough decisions to be made in the meantime. I have decided that I cannot bring another cat in to my house until all of my current cats have passed on, hopefully years from now. I am at my limit for sure. I have a sneaking feeling that Gabe and Graemer died of FIP, but I will never know. Now Miley tests positive for it........I will not test the others as there is no point. Once you get the positive test, with any cat, you cannot tell if the cat has it or has been exposed. I have decided that in fairness to all cats, once you test positive or have an outbreak, no more cats should come through the doors! My vet strongly believes this as well.

FIP can clear a cattery easily. It is a horrible virus with no cure in site.

I would concentrate on keeping their immune systems as healthy as possible.

Right now Miley shows no obvious signs of having FIP. I assume her test was positive because she was once exposed to it. I have no idea.

This must be heart breaking for you.