Guys, I made a research on Marek's disease and found out a lot of things about it. Found that when a chicken is breathing, it's got Marek's. When lesions are present, it can be Marek's too. When health starts to deteriorate, it can be Marek's too. My chickens has the first two. It's been 2 weeks and still no signs of deterioration. Is it Marek's? What should I do? Thanks guys.