Avian E. coli vaccine for protection against colibacillosis
A genetic deletion mutant live E. coli vaccine suitable for mass application to poultry, including chickens, is provided. Also provided is a safe and effective method to protect poultry against the ravages of Escherichia coli bacillosis infection and disease in which a live mutant aroA-gene deleted E. coli immunogen is administered to chickens, turkeys and the like via mass application routes such as coarse sprays and drinking water.
Wyeth
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Martin John Henry H. Mahesh Roberto Marcello
Woodward Fan Kumar La Ragione