Avian Coryza is an emerging poultry respiratory disease in some regions of the United States. Severe facial edema is probably the most notorious clinical sign which couples with a sharp decrease in egg production in laying hens.
For Pennsylvania Department of Ag flock recommendation letter: Flock recommendation letter 4-4-19 Final
For Pennsylvania Department of Ag biosecurity principles: StandardE-BiosecurityPrinciples 2019
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