Well I got my necropsy results back and it was positive for mareks.

They also had nematode worms so I need to figure out what I need to give them for that but that wasn't the cause of the problem.
I'm relieved I don't have to wonder anymore but I'm sad at the prospect of what's going to happen to my flock.
At least now when they start showing signs I will cull them and I won't have to watch them suffer.
I have been giving them rooster booster in their water and hopefully that will help their immune systems.
I ended up with a lot of roosters I might have to unfortunately Cull some of them . Once my young ones come of age I think it might be too much. From what I understand it doesn't affect the roosters like it affects the hens. Does anybody know how that works?
I think I'm going to stick to the plan of trying to brood some new hens that are vaccinated so that we still have some hens when the other ones start passing away.
I'm really sad because I have a sweet little hen that I saved when she was a day old baby she got out of the nest. when I found her I thought she was gone but I noticed that she was still a little bit alive so I put it in my shirt and carried her around while I made breakfast for my kids and it was my daughter's birthday

we call her miracle.
But chances are I'm going to lose her too

I'm trying not to think about that and I'm hoping that she'll be one of the ones that makes it.
Sorry for the rambling I think I'm just kind of in shock that I was unfortunately right that it was this disease.
Welasharon I also I have only been experiencing this in my polish chicks so far. I have two Polish silkie crosses that hatched this year maybe I'll be lucky and they won't get it.
As I'm understanding some of the chickens won't get it. it's worse for the babies and young hens but there's a possibility some won't get it either.
I appreciate any insight anybody has on this.