The invention is related to multivalent immunogenic compositions comprising more than oneS. pneumoniaepolysaccharide protein conjugates, wherein each of the conjugates comprises a polysaccharide from anS. pneumoniaeserotype conjugated to a carrier protein. Also provided are methods for inducing a protective immune response in a human patient comprising administering the multivalent immunogenic compositions of the invention to the patient. The multivalent immunogenic compositions are useful for providing protection againstS. pneumoniaeinfection and diseases caused byS. pneumoniae. The compositions of the invention are also useful as part of treatment regimes that provide complementary protection for patieints that have been vaccinated with a multivalent vaccine indicated for the prevention of pneumococcal disease.本發明係關於包含多於一種肺炎鏈球菌(S. pneumoniae)多醣蛋白結合物之多價免疫原性組合物,其中該等結合物各包含肺炎鏈球菌血清型的多醣與載體蛋白結合。亦提供在人類患者中誘導保護性免疫反應之方法,其包括向該患者投與本發明多價免疫原性組合物。該等多價免疫原性組合物可用於提供針對肺炎鏈球菌感染及肺炎鏈球菌引起之疾病的保護。本發明組合物亦可用作治療方案之一部分,向已經接種指示用於預防肺炎球菌疾病之多價疫苗之患者提供補充保護。