Glycotope and a semisynthetic vaccine conjugate from capsular polysaccharides of Group A and B Streptococcus.
(A) ‘Diluted' hexasaccharide containing only the key residues necessary to elicit an immune response to Group B Streptococcus type III [54–56]. (B) Group A CPS tethered to the ScpA193 protein conferring bivalent immunity [50,51].