Could someone please tell me what mericks desiese is

[chickenlover847]

I here about it at tractor supply on here everything someone please tell me what it is

 

[Eggcessive]

It is a virus that can cause paralysis, tumors, and sometimes blindness in chickens. A vaccine at one day old can help prevent the disease. Here is some info:
http://extension.unh.edu/resources/files/Resource000791_Rep813.pdf
http://www.thepoultrysite.com/diseaseinfo/90/mareks-disease