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Updated: Apr 21, 2026
A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
[Research advance in prevention policies of neonatal group B Streptococcus infection]
Jing-Jing Tong1, Kai-Hu Yao, Yong-Hong Yang
1Beijing Pediatric Research Institute, Beijing Children′s Hospital Affiliated to Capital Medical University, Beijing 100045, China. yyh66@vip.sina.com.
Insights
Group B Streptococcus (GBS) causes early- and late-onset disease in newborns. Antibiotic prophylaxis reduces early-onset GBS but not late-onset, necessitating new prevention strategies.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Medicine
- Infectious Diseases
Context:
- Group B Streptococcus (GBS) colonization in pregnant women is a primary risk factor for neonatal GBS disease.
- Neonatal GBS disease presents as early-onset or late-onset syndromes.
- Current prevention strategies include universal screening and risk-based assessment.
Purpose:
- To review the effectiveness of maternal intrapartum antibiotic prophylaxis for preventing neonatal GBS disease.
- To highlight the limitations of current antibiotic prophylaxis strategies.
- To emphasize the need for developing alternative GBS infection prevention methods.
Summary:
- Maternal intrapartum antibiotic prophylaxis has significantly decreased early-onset GBS disease but shows limited impact on late-onset GBS disease.
- Penicillin is the standard prophylactic antibiotic, with susceptibility testing recommended for penicillin-allergic women.
- The disadvantages of antibiotic prophylaxis underscore the importance of researching novel GBS infection prevention strategies.
Impact:
- Reduced incidence of early-onset neonatal GBS disease in countries with established prophylaxis policies.
- Identified the need for continued research into alternative and complementary methods for GBS prevention.
- Informs clinical practice regarding GBS screening and management during pregnancy and childbirth.
Abstract:
Group B Streptococcus (GBS) is responsible for two distinct clinical syndromes in the newborn period categorised as either early- or late-onset GBS disease. Maternal GBS colonization of gastrointestinal tract or vaginal is the major risk factor for GBS diseases. There are two main strategies for identifying women at risk of giving birth to a GBS-infected infant: universal screening strategy and risk-based assessment. In the United States and other countries, the implementation of maternal intrapartum antibiotic prophylaxis policies has significantly reduced the incidence of early-onset neonatal GBS disease, but has little effect on the incidence of late-onset GBS disease. Penicillin is the first choice for antibiotic prophylaxis treatment. GBS strains which are isolated from pregnant women who are allergic to penicillin should undergo antibiotic susceptibility testing. Antibiotic prophylaxis measures have some disadvantages, so researchers should actively develop other precautions to prevent GBS infection.
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