Related Experiment Video

Updated: Aug 21, 2026

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

Perinatal infections due to group B streptococci

Ronald S Gibbs1, Stephanie Schrag, Anne Schuchat

  • 1Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Denver, Colorado 80262, USA. ronald.gibbs@uchsc.edu

Obstetrics and Gynecology
|November 2, 2004
PubMed

Insights

Group B Streptococcus (GBS) screening guidelines have reduced early-onset neonatal infections by 70%. However, late-onset GBS disease remains a challenge, necessitating further research into prevention and treatment strategies.

Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Infectious Diseases

Background:

  • Group B Streptococcus (GBS) is a major cause of neonatal and maternal infections.
  • National guidelines for GBS prevention were first released in 1996.
  • Subsequent guidelines in 2002 recommended screen-based strategies and updated management protocols.

Purpose of the Study:

  • To review the epidemiology, diagnosis, and therapy of GBS perinatal infections.
  • To assess the impact of national guidelines on GBS infection rates.
  • To identify remaining clinical challenges and future research directions.

Main Methods:

  • Review of epidemiological data on GBS infections.
  • Analysis of the effectiveness of national consensus guidelines.
  • Identification of ongoing clinical issues and emerging concerns.

Main Results:

  • A 70% reduction in early-onset neonatal GBS infection since 1996.
  • No significant decrease in late-onset neonatal GBS disease.
  • New guidelines in 2002 focused on screening, penicillin allergy management, and specific clinical scenarios.

Conclusions:

  • Screening-based prevention has successfully reduced early-onset GBS infections.
  • Late-onset GBS disease requires further investigation and improved prevention strategies.
  • Ongoing challenges include diagnostic techniques, antibiotic resistance, and vaccine development.

More Related Videos

Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice04:18

Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice

Published on: October 10, 2025

Related Concept Videos

Development of the Oral Microbiota01:28

Development of the Oral Microbiota

The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Bacterial Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
Development of Human Microbiota01:30

Development of Human Microbiota

The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...