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Live oral monovalent Shigella flexneri 2a vaccine candidates as well as bivalent formulations with Shigella sonnei were evaluated in a rhesus monkey model for colonization and immunogenicity. Freshly harvested suspensions of S. flexneri 2a vaccine candidates WRSf2G12 and WRSf2G15 as well as S. sonnei vaccine candidate WRSs3 were nasogastrically administered to groups of rhesus monkeys, Macaca mulatta,...
Summary In this longitudinal case–control study, acute fracture was associated with low serum testosterone, which was transient in 43 % of men. While assessment of gonadal status is part of the assessment of bone fragility, measurement of testosterone in the early period after fracture may overestimate the prevalence of androgen deficiency. Introduction Measurement of circulating testosterone is...
Shigella causes diarrhea and dysentery through contaminated food and water. Shigella sonnei live vaccine candidates WRSs2 and WRSs3 are attenuated principally by the loss of VirG(IcsA) that prevents bacterial spread within the colonic epithelium. In this respect they are similar to the clinically tested vaccine candidate WRSS1. However, WRSs2 and WRSs3 are further attenuated by loss of senA, senB...
Shigellosis is a leading cause of diarrhea worldwide prompting vaccine development. The Shigella flexneri Invaplex 50 is a macromolecular complex containing IpaB, IpaC, and LPS, formulated from an aqueous extract of virulent Shigella delivered via nasal administration. Preclinical vaccine testing demonstrated safety, immunogenicity and efficacy. An open-label dose-escalating phase 1 study evaluated...
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