Merck Animal Health, known as MSD Animal Health outside of the United States and Canada, a division of Merck & Co., Inc., Rahway, N.J., USA, announces it has reintroduced its Corvac-3 vaccine to help U.S. poultry producers combat outbreaks of avian coryza, an acute respiratory infection of chickens.

Corvac-3 provides broad-spectrum protection against disease caused by Avibacterium paragallinarum (coryza serotypes A, B or C) and is approved for use in chickens five weeks of age or older by subcutaneous injection. It has optimum antigen content and provides dependable development of immunity against the disease.

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“In light of recent outbreaks of avian coryza, Merck Animal Health has relaunched its Corvac-3 vaccine in the U.S.” said Jim Stockam, D.V.M. for Merck Animal Health. “This vaccine is prepared from three inactivated strains of Avibacterium paragallinarum belonging to serotypes of A, B, and C and provides comprehensive protection against the strains associated with coryza outbreaks in the U.S.” The product is now commercially available. It comes in a 500-ml (1,000 doses) presentation.

For more information about Corvac-3, contact your Merch Animal Health sales or technical services representative or visit https://www.merck-animal-health-usa.com/species/poultry/products/corvac-3.