Marek's disease is caused by what type of virus?

Marek's disease is indeed caused by a herpesvirus, specifically known as Gallid herpesvirus 2. This virus primarily affects chickens and leads to a variety of issues, including tumors and nerve damage. The characteristic features of Marek's disease include the development of lymphomas and generalized immunosuppression, which can significantly impact flock health and productivity.

Herpesviruses are known for their ability to establish latent infections and can integrate into the host’s genome, which contributes to their pathogenicity. In the case of Marek's disease, the virus can persist in the environment and spread easily among birds, even in a vaccinated population. The knowledge of its classification as a herpesvirus is essential for understanding its epidemiology, the development of vaccines, and effective disease management in poultry industries.