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Updated: Jun 8, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
[Prevention of early-onset group B Streptococcus infections. 1. Application of the ANAES guidelines]
C Muris1, M Lemonnier, M Herlicoviez
1Service de gynécologie-obstétrique et médecine de la reproduction, CHU, boulevard Georges-Clémenceau, 14033 Caen cedex, France. murisguillou@free.fr
Insights
Adherence to guidelines for preventing early-onset infections via prenatal screening is achievable. This study shows high compliance with group B Streptococcus screening and antibiotic use in high-activity obstetrics departments.
Area of Science:
- Obstetrics and Gynecology
- Infectious Disease Prevention
- Public Health
Context:
- Prenatal screening for group B Streptococcus (GBS) is crucial for preventing early-onset neonatal infections.
- Adherence to national guidelines for GBS prophylaxis impacts antibiotic use and patient outcomes.
- High-volume obstetrical departments face unique challenges in guideline implementation.
Purpose:
- To evaluate adherence to Anaes guidelines for early-onset infection prophylaxis.
- To assess the systematic prenatal vaginal swab strategy for GBS detection and risk factor identification.
- To analyze intrapartum antibiotic administration based on screening results.
Summary:
- A retrospective study of 6125 deliveries found 88.3% compliance with prenatal vaginal swabs, with 79.1% performed per guidelines.
- 90.2% of patients with positive swabs received intrapartum antibiotics, indicating effective treatment protocols.
- A 40% increase in antibiotic consumption was observed, without severe complications, highlighting the need for optimized management of specific scenarios like rapid delivery or penicillin allergy.
Impact:
- Demonstrates the feasibility of national guideline adherence in busy obstetrical settings.
- Highlights areas for improvement in GBS screening and prophylaxis protocols.
- Contributes to evidence-based practices for reducing neonatal infections and optimizing antibiotic stewardship.
Objectives:
To examine adherence to the Anaes guidelines for early-onset infections prophylaxis, based on a systematic prenatal vaginal swab aiming group B Streptococcus and/or infection risk factors during delivery.
Patients And Methods:
Retrospective study of 6125 consecutive deliveries through a 28-month period. Data were collected from the patients files recorded in a computer database.
Results:
Overall, a vaginal swab was performed on 88.3% of the patients. Among these, 79.1% were performed according to the guidelines. Among the patients, 90.2% with a positive swab received intrapartum antibiotics. In accordance to the national guidelines, we noticed a 40% increase in the consumption of antibiotics, without any severe complication during the study. Certain points must be improved though: time of the sampling, antibiotic therapy in case of quick delivery, management of patients with allergy to penicillin.
Conclusion:
Concordance with the national guidelines is feasible in a department with a high obstetrical activity.
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