I have 2 14 week only pullets that are currently affected. I found the first one unable to walk but able to move her legs but not use them. However, she gets around as needed and uses her wings to get to the food and water in the hospital cage I've set up. She's bright and alert, but just can't use her legs. They are both stretched out in the same direction, not opposite as the book says. The next one was out in the yard yesterday and I turned on the hose so they could play in the water. I went into one of the coops to do something and when I came out, I found this one laying upside down like she was dead. I thought there is no way, I was just there. So I went and got her, and she perked right up and I set her down and she staggered off and then seemed fine. Just like she was slightly drunk. She made it up the big ramp into the coop last night. Tonight, she's unable to walk also, but bright and alert. I moved her into the hospital cage with the other one so at least they will have company. Now I know I'll have to put them down. I hate the thought since they are aware and alert and surviving on their own. However, I can't let them get everybody else sick, which they probably will anyway. I did notice that they were pretty thin for 14 week old pullets. But they don't seem to fit the description of Marek's that's in the book very well. Thoughts? Also, is there something I can do for the other to help prevent them getting it too? A lot of them are roosters so I'm sure they won't get it. But will disinfecting the coop help? Any drugs, diet etc?