Capsular genotype distribution of Group B Streptococcus colonization among at-risk pregnant women in Sao Paulo, Brazil. Renato de Ávila Kfouri; Antônio Carlos Campos Pignatari; Elisa Junko Ura Kusano; Talita Trevizani Rocchetti; Clara Lopes Fonseca; Lily Yin Weckx;