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Streptococcus pneumoniae pneumolysin (PLY) is a virulence factor that causes toxic effects contributing to pneumococcal pneumonia. To date, deriving a PLY candidate vaccine with the appropriate detoxification and immune profile has been challenging. A pneumolysin protein that is appropriately detoxified and that retains its immunogenicity is a desirable(More)
Currently marketed Streptococcus pneumoniae vaccines are based on polysaccharide capsular antigens from the most common strains. Pneumococcal histidine triad protein D (PhtD) is a conserved surface protein that is being evaluated as a candidate for a vaccine with improved serotype coverage. Here, we measured the functional activity of human anti-PhtD(More)
We investigated the immunogenicity, stability and adsorption properties of an experimental pneumococcal vaccine composed of three protein vaccine antigens; Pneumococcal histidine triad protein D, (PhtD), Pneumococcal choline-binding protein A (PcpA) and genetically detoxified pneumolysin D1 (PlyD1) formulated with aluminum salt adjuvants. Immunogenicity(More)
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