[Quantitative evaluation of Vibrio cholerae colonization and lymphocyte count in small intestine villi of rabbits immunized with vibrio and cholera toxin].

The influence of parenteral immunization with live virulent vibrios and lipopolysaccharide-containing choleragen toxoid and oral immunization with liver avirulent vibrios on the interaction of V. eltor and the mucous membrane was studied on the ligated loops of the small intestine in 164 rabbits. Protection from enterotoxigenicity (the accumulation of fluid) was compared with the suppressive effect on the adhesion and colonization of vibrios.

[Evaluation of the adhesion, colonization and enterotoxigenicity of Vibrio cholerae in the enteral infection of intact and passively immunized newborn animals].

V. eltor were introduced into 323 suckling rabbits through a gastro-duodenal tube and into 629 suckling mice either by the same method, or per annum by a new specially developed technique. Passive immunization was achieved in suckling mice by the preliminary introduction of antibacterial sera into the small intestine or by feeding them with the milk of female mice immunized at the end of pregnancy, and in suckling rabbits by feeding them with the milk of goats immunized by introducing vibrios through the tests of the udder.