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  • Title: Memory immune response generated in Cercopithecus aethiops against meningococcal polysaccharide serogroup C conjugate vaccine.
    Author: Carmenate T, Guirola M, Alvarez A, Canaán L, González S, Caballero E, Menéndez T, Guillén G.
    Journal: FEMS Immunol Med Microbiol; 2005 Feb 01; 43(2):133-40. PubMed ID: 15681142.
    Abstract:
    The chemical conjugation of bacterial polysaccharide to carrier proteins has proved to be an efficient tool to improve the immunological response against these bacterial antigens. In this study, we characterized the antibody response generated in a non-human primate model against the meningococcal capsular polysaccharide serogroup C (CCPS) conjugated to the P64k protein. Similar to licensed vaccines the CCPS conjugate is able to generate a good memory immune response with antibody titers threefold higher than the free CCPS. Three different ELISA protocols were used to measure the antibody response and the importance of the coating antigen was demonstrated. The ELISA using the derivatized CCPS showed the best results and had a high correlation with the bactericidal activity. The antibodies elicited showed a high protective capacity when assayed in the infant rat protection model.
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