Introduction

Streptococcus agalactiae or Group B Streptococcus (GBS)  is the most frequent cause of early onset neonatal sepsis. Maternal colonisation of the lower genital tract with GBS during pregnancy increases the risk of neonatal infection by vertical transmission. Administration of intrapartum antibiotic prophylaxis (IAP)  to women at risk of transmitting GBS to their baby can reduce the rate of   early onset GBS disease (EOGBSD) by 80%.IAP does not prevent late onset GBS disease.

引言
无乳链球菌（又称B族链球菌，GBS）是早发型新生儿败血症的最常见病原体。妊娠期母体下生殖道GBS定植会通过垂直传播增加新生儿感染风险。对具有GBS传播风险因素的产妇实施产时抗生素预防（IAP），可使早发型GBS疾病（EOGBSD）发生率降低80%。需注意的是，IAP不能预防晚发型GBS疾病。