GBSalso: ジービーエスFreq.FrequencyTop 100,000Meanings1noungroup B streptococcus; GBSmedicineMedical term for the bacterium Streptococcus agalactiae; commonly used in obstetrics and neonatology.妊にん婦ぷのGBS検けん査さは妊にん娠しん後こう期きに行おこなわれます。GBS screening for pregnant women is performed in the third trimester.