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Vaccine. 1996 Jul;14(10):1009-15.

Phase I clinical trial with a hexavalent PorA containing meningococcal outer membrane vesicle vaccine.

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1
Laboratory of Vaccine Development and Immune Mechanisms, RIVM, Bilthoven, The Netherlands.

Abstract

A meningococcal outer membrane vesicle (OMV) vaccine was prepared from two production strains designed to express three serosubtype-specific class 1 outer membrane proteins or PorA. The resulting hexavalent PorA OMV vaccine contained the serosubtypes P1.7,16; P1.5,2; P1.19,15; P1.7h,4; P1.5c,10; P1.12,13 and were used to immunize adult volunteers. A single immunization with two dosages, 7.5 and 15 micrograms of the individual PorAs, was studied. The vaccine was considered safe for further use. Approximately half of the volunteers demonstrated a fourfold increase in bactericidal antibody activity against six test strains expressing the specific PorAs when given the higher dosage. This bactericidal activity was found to be directed against PorA.

PMID:
8873396
[Indexed for MEDLINE]
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