SEROTYPE-INDEPENDENT VACCINES AGAINST PNEUMOCOCCAL INFECTION

Creation of serotype-independent vaccines includes 4 directions - construction of protein vaccines based on recombinant pneumococcus proteins, whole-cell killed or attenuated vaccines, DNA-vaccines and use of Streptococcus pneumoniae as a carrier for polysaccharide and conjugated vaccine preparations. Protein vaccines are the most widely studied. Around 20 proteins are described for pneumococcus - intracellular, associated with cell wall and secreted. The majority of researchers stop at construction of a vaccine preparation including a set of several proteins, protecting from colonization, invasion, pneumonia. Mechanism of action for protein vaccines differs from that of polysaccharide vaccines. Protein preparations create protection from several pneumococcus serotypes. Study of cross-activity of protein-candidates for vaccine preparations with human organism tissues is actual for preclinical studies. Selection of adjuvants is necessary for these vaccines, because aluminium hydroxide is not a suitable adjuvant for these preparations