Chondroitinase attenuated Edwardsiella ictaluri and a vaccine for prevention of enteric septicemia (es) in fish

摘要

The present invention provides a chondroitinase attenuated Edwardsiella ictaluri bacteria. Further, this invention provides a vaccine comprising a protective amount of a chondroitinase attenuated strain of Edwardsiella ictduri bacteria and a method for protecting a fish from Enteric Septicemia comprising administering the vaccine to the fish.