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    Bull World Health Organ. 1990;68 Suppl:13-6.

    Human immunization with attenuated sporozoites.

    Source

    Army Malaria Research Unit, University of Sydney.

    Abstract

    Studies conducted between 1971 and 1975 showed that attenuated sporozoites can induce protection against human malaria. Three volunteers were protected against challenge with either a homologous or heterologous strain of Plasmodium falciparum after being exposed to a total of 440-987 X-irradiated mosquitos on 6-8 occasions over a period of 10-38 weeks. Protection lasted for at least 8 weeks, but not 16 weeks, after the last immunization with irradiated sporozoites. Another 7 volunteers were not protected against challenge with a homologous strain after exposure to a total of fewer than 200 irradiated mosquitos, infected with either P. falciparum or P. vivax, on 2-4 occasions over a period of 4-17 weeks. These studies provide an encouraging basis for pursuing the development of a sporozoite vaccine against human malaria.

    PMID:
    2094578
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2393053
    Free PMC Article

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