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Safety and immunogenicity of an autoclaved Leishmania major vaccine.

Authors: Khalil, EAG; Elhassan, AM; Zulstra, EE; Osman, OF; Eljack, IA; Ibrahim, ME; Mukhtar, MM; +2 Authors

Safety and immunogenicity of an autoclaved Leishmania major vaccine.

Abstract

To test the safety and immunogenicity of two doses of autoclaved L. major (ALM) vaccine mixed with BCG.Kala-azar endemic area of eastern Sudan.This was a randomised, double blind and BCG controlled phase I/II study.Eighty healthy volunteers (forty children and forty adults) with no past history of kala-azar, no reactivity to leishmanin antigen and with a reciprocal direct agglutination test (DAT) titre of <200 were recruited. Informed consents were obtained from volunteers or their guardians in case of children.Conversion in the leishmanin skin and the DAT tests.Two intra-dermal injections of either ALM+BCG or BCG alone. The injections were three weeks apart.Side effects were minimal and confined to the injection site, with no significant difference between the ALM+BCG and the BCG alone groups. The leishmanin skin conversion was significantly higher in the ALM+BCG group compared to the BCG alone group (p<0.0005). Furthermore, the Leishmanin skin test conversion was significantly higher in children than adults (p<0.0005). One adult volunteer in the ALM+BCG group converted in both the Leishmanin skin and the DAT tests.We conclude that two doses of ALM+BCG are safe and immunogenic, especially in children.

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Keywords

Adult, Leishmania, Male, Protozoan Vaccines, Adolescent, Dose-Response Relationship, Drug, Infant, Middle Aged, Reference Values, Child, Preschool, Immunogenetics, Animals, Humans, Female, Child, Leishmaniasis, Leishmaniasis Vaccines, Aged

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
18
Average
Top 10%
Top 10%
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