PREPARATION AND USE OF FORMALIN-KILLED COLONIZATION-FACTOR-ANTIGEN (CFA)-EXPRESSING E. COLI ORGANISMS FOR VACCINATION AGAINST ENTERIC INFECTION/DIARRHEA CAUSED BY ENTEROTOXIGENIC E. COLI BACTERIA IN HUMANS

摘要

Disclosed is a method of producing a vaccine composition against enteric infection caused by enterotoxigenic E. coli bacteria in humans. E. coli strains selected from different known strains each having the ability of expressing a certain type of colonization factor antigens are grown in a liquid culture medium. Finally formalin-killed E. coli strain having substantially preserved antigenic and hemagglutinating properties of said certain type of colonization factor antigens, is mixed with a pharmaceutically acceptable excipient and/or diluent. Further disclosed is a method of preventing an enteric infection caused by enterotoxigenic E. coli bacteria in humans, whereby a vaccine composition comprising inactivated E. coli strain is administered to a human being for the prevention of said infection.