marek’s disease

Marek’s Disease. Marek’s disease (MD) is a herpesvirus-induced neoplastic disease of chickens characterized by infiltration of various nerve trunks and/or organs with pleomorphic lymphoid cells. It’s observed mostly in chickens and occurs most commonly in young, sexually immature chickens (2-7 months old) but can occur at basically any age after 3 weeks old. A Marek’sContinue reading “Marek’s Disease”