Oral vaccination of fish with live attenuated Edwardsiella ictaluri vaccines

摘要

The present invention is directed to a novel live attenuated isolate and sub-isolets thereof of a strain of the pathogen Edwardsiella ictaluri for protecting fish from ESC infection or disease, a vaccine composition comprising the isolet, a method of oral delivery of the vaccine and any vaccine, and an apparatus designed to effectively mix the vaccine with fish feed and deliver the vaccine to fish.