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Streptococcus pneumoniae type 9v capsular polysaccharide antigen is a vaccine that contains highly purified capsular polysaccharides from the invasive pneumococcal type 9v of Streptococcus pneumoniae. It is an active immunization for intramuscular or subcutaneous injection against pneumococcal disease such as pneumococcal pneumonia and pneumococcal bacteremia.