Marek's disease in Poultry is caused by

A. Protozoa

B. Fungi

C. Virus

D. Bacteria

Answer: Option C

Solution(By Examveda Team)

Marek's disease in Poultry is caused by Virus.
Marek's disease is a highly contagious viral neoplastic disease in chickens. It is named after Jozsef Marek, a Hungarian veterinarian who described it in 1907. Marek's disease is caused by an alphaherpesvirus known as "Marek's disease virus".
The disease is characterized by the presence of T cell lymphoma as well as infiltration of nerves and organs by lymphocytes.