Verticillium Wilt on Potatoes

[vfem]

It took me a bit to even realize it! After they got hit from the frost I had some black leaves and they struggled to come back. They did better for about a week and then turned around and aren't doing so hot now.

After some research it looks like its Verticillium Wilt.

So my question is, are they too far gone... or can I treat?!