Hello! I got 15 Cornish X from Purely Poultry (never buying from them again) when in the past three days, each day had one of them die. I didn't know what caused this, but today, another chick died. I saw the legs, and it looked exactly like Marek's!!! I just realized that every one of those chicks that died were in a paralyzed position, and that they did show symptoms of Marek's! I feel so stupid! I panicked, and, knowing that Marek's is highly contagious, whisked the remaining chicks outside and am currently sanitizing the container with white vinegar and changing the bedding. I'm worried, because I had ANOTHER BROODER with several other, older chicks in the same room!!! Marek's travels on infected dust, so I'm in the process of cleaning the other brooders too, and sanitizing the room... please, help!!! I don't know what to do! I can't let my remaining chicks die!