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A safer and more effective vaccine than the unlicensed Francisella tularensis Live Vaccine Strain (LVS) is needed to protect against the biowarfare agent F. tularensis. Previously, we developed an LVS ΔcapB mutant that is significantly safer than LVS and provides potent protective immunity against F. tularensis respiratory challenge when administered intranasally but limited protection when administered...
BCG has been administered to over 4 billion persons worldwide, but its efficacy in preventing tuberculosis in adults has been highly variable. One hypothesis for its variability is that different strains of BCG vary in protective efficacy, and moreover, that evolutionarily early strains are more efficacious than the more attenuated evolutionarily late strains, which lack region of deletion 2. To examine...
Mycobacterium bovis infection of cattle and other domesticated animals exacts a significant economic toll in both economically developing and industrialized countries. Vaccination of herds and/or wild animals that share their grazing land and serve as reservoirs of infection has been proposed as a strategy to combat bovine tuberculosis. However, the only currently available vaccine, M. bovis Bacille...
In previous studies, we have described a live recombinant BCG vaccine (rBCG30) overexpressing the 30kDa major secretory protein of Mycobacterium tuberculosis that induces greater protective immunity against tuberculosis than the current vaccine in the demanding guinea pig model of pulmonary tuberculosis. In this study, we have investigated the impact of vaccine dose on the development of cell-mediated...
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