Safety and immunogenicity of a polyvalent Klebsiella capsular polysaccharide vaccine in humans. 1986

S J Cryz, and P Mortimer, and A S Cross, and E Fürer, and R Germanier

A polyvalent Klebsiella vaccine composed of six serotypes of capsular polysaccharides (K2, K3, K10, K21, K30, and K55) was developed and its safety and immunogenicity evaluated in humans. Highly purified capsular antigens were treated in 0.1 N NaOH in 95% ethanol to detoxify trace amounts of contaminating lipopolysaccharide (LPS). The vaccine was nontoxic and nonpyrogenic for animals. A total of 40 individuals received either 25 or 50 micrograms of each represented antigen subcutaneously. Reactions to vaccination, where noted, were transient and mild in nature. An immunizing dose of 50 micrograms of each antigen (300 micrograms total) elicited a fourfold or greater immunoglobulin G (IgG) response to all vaccine antigens in greater than 80% of vaccinees. Generally, the serospecificity of the antibody response was limited to those capsular antigens included in the vaccine. IgG isolated from the serum of vaccinees was found to be highly protective against fatal experimental Klebsiella K2 burn wound sepsis indicating that the functional antibody is elicited following vaccination.

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007709 Klebsiella A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms arrange singly, in pairs, or short chains. This genus is commonly found in the intestinal tract and is an opportunistic pathogen that can give rise to bacteremia, pneumonia, urinary tract and several other types of human infection.
D007710 Klebsiella Infections Infections with bacteria of the genus KLEBSIELLA. Infections, Klebsiella,Infection, Klebsiella,Klebsiella Infection
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011135 Polysaccharides, Bacterial Polysaccharides found in bacteria and in capsules thereof. Bacterial Polysaccharides
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000907 Antibodies, Bacterial Immunoglobulins produced in a response to BACTERIAL ANTIGENS. Bacterial Antibodies

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