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There is a requirement for vaccines to protect against pathogens that may be misused for bioterrorism or biowarfare purposes. In particular, biodefence vaccines are required that may be used for safe and easy immunisation of populations and that can rapidly induce mucosal immunity to provide protection at the lung surface against a range of airborne agents. To address this need, recombinant Salmonella...
In recent years there has been significant progress in the development of attenuated Salmonella enterica serovar Typhi strains as candidate typhoid fever vaccines. In clinical trials these vaccines have been shown to be well tolerated and immunogenic. For example, the attenuated S. enterica var. Typhi strains CVD 908-htrA (aroC aroD htrA), Ty800 (phoP phoQ) and χ4073 (cya crp cdt) are all promising...
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