[Oral immunization of rabbits against enteropathogenic serotypes of E. coli. II. Production of circulating and fecal antibodies induced with monovalent and polyvalent vaccines].

Oral vaccination of rabbits with killed polivalent E. coli vaccines (enteropathogenic strains) induced the production of circulating and fecal antibodies to the large majority of serotypes present in the vaccines. The production of specific IgA immunoglobulins in the intestine was also detected. The titres were in general of the same height as those obtained when individual vaccines were administered singularly.