Pneumococcal vaccine

(brand name: Prevnar); a synthetic (multivalent conjugate) complex of the polysaccharides (purified surface components) of different pneumococcal strains attached to a genetically modified nontoxic form of the diphtheria toxin protein called CRM197, targeting the most common seven strains of pneumococcus that account for approximately 80% of invasive disease in infants and being the first pneumococcal vaccine for children under the age of two