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Updated: Jul 31, 2025

A Murine Model of Group B Streptococcus Vaginal Colonization
10:19

A Murine Model of Group B Streptococcus Vaginal Colonization

Published on: November 16, 2016

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Group B Streptococcus in Pregnancy

Jenny Y Mei1, Neil S Silverman1

  • 1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, 200 Medical Plaza, Suite 430, Los Angeles, CA 90095-1740, USA.

Obstetrics and Gynecology Clinics of North America
|May 6, 2023
PubMed

Insights

Preventing early-onset neonatal sepsis from group B streptococcus (GBS) involves screening pregnant patients and administering intrapartum antibiotic prophylaxis (IAP) when indicated. Prompt IAP significantly reduces GBS transmission risks to newborns.

Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Infectious Disease

Background:

  • Group B Streptococcus (GBS) poses a significant risk for early-onset neonatal sepsis.
  • Effective prevention strategies are crucial for improving neonatal outcomes.

Purpose of the Study:

  • To outline screening and management guidelines for GBS in pregnant patients.
  • To reduce the incidence of early-onset neonatal sepsis caused by GBS.

Main Methods:

  • Screening pregnant patients for GBS colonization between 36 0/7 and 37 6/7 weeks' gestation.
  • Administering intrapartum antibiotic prophylaxis (IAP) for positive cultures, GBS bacteriuria, or history of GBS disease in a newborn.
  • Providing IAP based on intrapartum risk factors when GBS status is unknown.

Main Results:

  • Timely screening identifies GBS carriers eligible for IAP.
  • IAP administration in indicated cases significantly lowers the risk of neonatal GBS sepsis.
  • Adherence to guidelines ensures appropriate antibiotic use during labor.

Conclusions:

  • Universal GBS screening and targeted IAP are effective in preventing early-onset neonatal sepsis.
  • Intrapartum management protocols should be followed to minimize GBS transmission.
  • Penicillin is the preferred agent for IAP, with alternatives available for allergic patients.

Keywords:
Group B streptococcusIntrapartum antibiotic prophylaxisNeonatal sepsis

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