Just got the lab results back from the 2 chickens that died a few weeks ago. It was Marek's Disease and I've lost several others from the same symtoms this summer. Do I really need to get rid of all my chickens? I just bought 20 new chicks! They're isolated so far. The vet said I need to get rid of all of them and not have chickens for several years!!! Since the last chicken died we've poured a concrete floor in the chicken coop so it will be easier to disinfect, but they free range during the day. Is eating the eggs a problem?