Moser I, Hohmann A, Schmidt G, Rowley D. Salmonellosis in mice: studies on oral immunization with live avirulent vaccines.
Med Microbiol Immunol 1980;
168:119-28. [PMID:
7005640 DOI:
10.1007/bf02121760]
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Abstract
The avirulent Salmonella typhimurium galE strain G30, following oral feeding to mice, developed a state of immunity to a secondary oral challenge with virulent Salmonella typhimurium. This immunity was concommitant with the development of intestinal and serum antibodies and delayed-type hyepersensitivity (DTH) to Salmonella antigens. In contrast, repeated oral doses of a hybrid E. coli vaccine, which expresses the O antigens of Salmonella typhimurium, provided a lesser degree of immunity and, although able to stimulate the formation of serum antibodies, it elicited only a low level of intestinal antibodies and no measurable DTH.
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