Proportion of GBS serotypes in a pentavalent vaccine (Ia, Ib, II, III and V). A, Forest plot of GBS serotype proportion covered for maternal colonization. Studies in which women received swab for culture antepartum or in labor were included10,16,19,31 (Musa Mohammed, personal communication). B, Forest plot of GBS serotype proportion covered for EOGBS disease. Studies with infants <7 days old with GBS-positive blood or CSF culture were included.10,25,31 C, Forest plot of GBS serotype proportion covered for LOGBS disease. Studies with infants 8–90 days old with GBS-positive blood or CSF culture were included.10,25,31