OH, how AWFUL! It ISN'T your fault; that is such a TERRIBLE policy to have!

I'll keep you in my prayers, that you will be able to find peace with yourself and stop blaming yourself for the horrible, horrible experience. The little kitty is at RB now, feeling better than it has ever felt here in this cold, cruel world!

You may have saved more of the other cats there today though, without even realizing it. Maybe more of them would have become sick with this same thing if they had been exposed to it through this little one. It doesn't make it any better, I know, but it would have been just a matter of time before the workers there had noticed it and it would have happened anyway.