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Oral vaccination with the defined live attenuated Francisella novicida vaccine strain U112ΔiglB has been demonstrated to induce protective immunity against pulmonary challenge with the highly human virulent Francisella tularensis strain SCHU S4. However, this vaccination regimen requires a booster dose in mice and Exhibits 50% protective efficacy in the Fischer 344 rat model. To enhance the efficacy...
Mast cells have classically been implicated in the triggering of allergic and anaphylactic reactions. However, recent findings have elucidated the ability of these cells to selectively release a variety of cytokines leading to bacterial clearance through neutrophil and dendritic cell mobilization, and suggest an important role in innate host defenses. Our laboratory has established a primary bone...
Francisella tularensis, an intracellular Gram-negative bacterium, is the causative agent of tularemia and a potential bioweapon. Currently, there is no licensed vaccine against this organism. We have characterized the efficacy of a defined F. tularensis subsp. novicida mutant (ΔiglB) as a live attenuated vaccine against pneumonic tularemia. Replication of the iglB mutant (KKF235) in murine macrophages...
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