In article m, VX
writes
I'll repot them
in something bigger in garden soil (or john innes) and see if that helps.

I wouldn't do that. I have a friend who is a plant pathologist and he
identified the same virus in my phlox. The only thing you can do is to
take the whole lot up and burn them. He advised that they should not be
composted. Also don't plant phlox in the same soil. HTH

--
Judith Lea