Source: MORNING AG CLIPS, 8/21/19

Marek’s disease—a highly contagious viral disease caused by a herpesvirus—is a constant threat to poultry worldwide. It is also one of the most preventable diseases with vaccination. However, while vaccines prevent poultry from becoming sick with symptoms of the virus, they do not prevent virus spread and mutation—considered the main reason for increased virus virulence, or severity, in field strains in U.S. commercial flocks. To help improve the control of Marek’s disease, veterinary medical officer John Dunn and his team at the Agricultural Research Service (ARS) Avian Disease...

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