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Updated: Jul 12, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Risk factors related to group B streptococcal colonization in pregnant women in labor
Ekachai Kovavisarach1, Warintorn Sa-ad Ying, Suwattana Kanjanahareutai
1Department of Obstetrics and Gynecology, Rajavithi Hospital, Ministry of Public Health, Bangkok, Thailand.
Objective:
To determine the risk factors related to group B streptococcal (GBS) colonization in pregnant women on admission in labor
Material And Method:
From the 1st-30th October 2004, at the Rajavithi Hospital, 320 pregnant women, who fulfilled the specified criteria, were selected for a cross-sectional descriptive study. Swabs were cultured from the lower vagina and anorectum for GBS using Todd-Hewitt broth with nalidixic acid 15 microg/ml and gentamicin 8 microg/ml only.
Results:
Colonization was present in 58 cases (18.12%). The risk factor for GBS colonization was an older mean maternal age and a lower mean gestational age. No mothers or neonates during the study period developed a clinical infection from GBS.
Conclusion:
The risk factors for GBS colonization in pregnant women were older maternal age and lower gestational age.
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