Iki gikoresho gikoreshwa mukumenya neza itsinda B streptococcus nucleic aside ADN muri vitro rectal swabs, vaginal swabs cyangwa rectal / vaginal ivanze nabagore batwite bafite ibyago byinshi byibyumweru hafi 35 ~ 37 byo gutwita, nibindi byumweru byo gutwita hamwe nibimenyetso byubuvuzi nkibi nko gucika imburagihe imburagihe, kubangamira imirimo itaragera, nibindi.