Avian E. coli vaccine for protection against colibacillosis

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...

Reexamination Certificate

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C424S234100, C435S243000, C435S252300

Reexamination Certificate

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07357935

ABSTRACT:
A genetic deletion mutant liveE. colivaccine suitable for mass application to poultry, including chickens, is provided. Also provided is a safe and effective method to protect poultry against the ravages ofEscherichia colibacillosis infection and disease in which a live mutant aroA-gene deletedE. coliimmunogen is administered to chickens, turkeys and the like via mass application routes such as coarse sprays and drinking water.

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