I have been reading a lot about Mareks and I am still confused. I had a young pullet...about 3 months old that I am pretty sure had Mareks. I separated her from the rest of the flock...13 others about the same age. All was well, until a few days ago, my almost 5 month old Buttercup pullet, Sophie is ill.. she isn't eating...walks around a little, but wings are drooping and she is bobbing her head...like she is having trouble swallowing...only it's a pretty steady rythmn?? It doesn't look like she is going to make it. She isn't eating or drinking? So, I suspect Sophie has Mareks too...I just don't know what to do. I culled by first one..A brabanter named Tinkerbell..a real sweetie. This flock is just a few weeks shy of 5 months...the others must have been infected to? I have an older flock of 15..all over a year old...they are in coops/pens side by side, but separated by a fence? I am broken hearted...what can I do?