I have a 6 day old chick that seemed fine, I had her vaccinated for Mareks. Overnight she started to act paralyzed, can't seem to hold up head, walk or move. I have her some electrolyte water this morning and expected she was going to soon die but it is now into the evening and she is still in this condition. Any comments on what could cause a prolonged dying process or her condition? I don't want her to suffer, any help is appreciated.