Has anyone had experience hatching eggs from a flock in which Mareks disease has been diagnosed? I had 2 Onagadori pullets die last December. I necropsied one myself and took the other to a veterinary diagnostic lab for confirmed diagnosis. No other deaths in my flock since. I did vaccinate everyone on the veterinarians advice because ‘what the heck, it can’t hurt’. Eggs are in the incubator and due to hatch tomorrow. One infertile egg was remove at 8 days and a couple failures at about 15 days. This is my first time incubating eggs also, so failures may be my fault. I wonder if the Mareks will affect the health of any of the embryos or hatched chicks.