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A heterologous prime-boost vaccination with DNA vectors and vaccinia virus recombinants (VVr) has been shown to enhance specific cellular immune responses and to elicit significant protection against pathogens in animal models. In this study, we have analyzed, in the leishmaniasis cutaneous murine model, the effectiveness of this prime-boost strategy by immunizing with a DNA vector followed by boost...
The immunological response in healthy subjects to a crude leishmania antigen vaccine (Leishvacin) plus rhGM-CSF without prior Montenegro (DTH) skin testing was evaluated. Fifty-six healthy volunteers received vaccine plus either placebo or rhGM-CSF at day 0, followed by either a vaccine booster or placebo at day 21. IFN-γ and IL-5 levels were significantly enhanced by day 21. The adjuvant group had...
To determine if BCG was required in booster injections for autoclaved Leishmania major (ALM) vaccine, 75 volunteers with no response to leishmanin were injected double-blind and randomly with either ALM+BCG or BCG alone for the first injection and boosted either with ALM+BCG, ALM or BCG alone for the second and third. Addition of BCG to the boosters significantly increased the frequency and the magnitude...
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