Momo posted earlier about problems with Marek's disease in a newly acquired flock. I too have a similar problem, and wanted an update on the fate of the flock. I've been losing on average one a day for the past week. It's a huge flock, so I really do NOT want to cull all of them. Will it run it's course, leaving only the resistant ones? I'm planning on buying replacement chicks, and raising them completely separately and NEVER combining them. Please repost Momo and let us know what happened. Many thanks.