I hatched 12 Easter eggers last week. They are 10 & 11 days old and the youngest is showing symptoms of Mareks. His one leg and wing seem paralyzed and this has gotten progressively worse. After reading about this disease, is it possible to get it this young (10 days)? I isolated him from the others. The others seem fine, but will they also get sick? What should I do to give them a better chance of not getting sick? Any help is greatly appreciated.