Started my first batch of 30 Broiler recently. I lost one the first week and put one down that couldn't walk anymore at three weeks. The 28 that I have left are coming up on 8 weeks now. I had one that was flipped on it's back one morning last week. I brought it in the garage and isolated it. Over the past week it has only gotten worse and one leg is totally sprawled out to the side and the bird is immobile. I'm going to cull and burry this one just incases but I wanted to see if anyone could answer a couple things for me. 1. Could this be Marek's disease or something else that could be spread to my layers? 2. When I process my 27 birds do I need to worry that some of them may have Marek's. Can this be spread to humans? I'm sure I'm just reading too much online, I just don't want to be worried that I have a freezer full of contaminated poultry. From what I read online broilers with Marek's should be disposed of??