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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

[Maternal carriage and vertical transmission of group B Streptococcus (GBS)]

H Miyazawa1, T Wakai, T Toshida

  • 1Department of Pediatrics, National Medical Center Hospital.

Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases
|October 1, 1992
PubMed

Insights

Group B Streptococcus (GBS) contamination is common in infants, often originating from mothers. Type Ia and III GBS infections in infants correlate with antibody levels, impacting long-term colonization.

Area of Science:

  • Neonatal infectious diseases
  • Bacteriology
  • Immunology

Context:

  • Group B Streptococcus (GBS) causes serious infections like pneumonia, sepsis, and meningitis in infants, with unknown outcomes.
  • GBS has early-onset and late-onset forms, and new types like M9 have been identified.
  • Accurate GBS typing and antibody concentration analysis are crucial for understanding infant infections.

Purpose:

  • To investigate the source and prevalence of GBS contamination in infants.
  • To identify common GBS types colonizing infants and their persistence.
  • To explore the relationship between GBS contamination types and infant serum antibody concentrations.

Summary:

  • A study followed infants for one year, finding 52% had GBS contamination (throat or stool), often originating from mother-infant transmission.
  • The most prevalent GBS types were Ia, III, JM9, and NT6. Types other than III persisted for over 9 months.
  • Infant contamination with GBS types Ia or III correlated with specific antibody concentrations in their blood.

Impact:

  • Provides insights into GBS transmission dynamics from mother to infant.
  • Highlights the significance of specific GBS serotypes in infant colonization and persistence.
  • Suggests a link between infant antibody response and the duration of GBS colonization.

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