Vaginal colonization with group B streptococcus: a study in college women

Area of Science:

• Obstetrics and Gynecology
• Microbiology
• Public Health

Background:

• Group B Streptococcus (GBS) is a common bacterium.
• Vaginal colonization by GBS is a significant concern in women's health.
• Understanding prevalence and risk factors is crucial for targeted interventions.

Purpose of the Study:

• To determine the prevalence of vaginal GBS colonization in college women.
• To identify risk factors associated with GBS colonization.
• To compare the sensitivity of different culture methods for GBS detection.

Main Methods:

• Vaginal cultures and anonymous questionnaires administered to 499 college women.
• Comparison of selective broth medium versus direct blood agar plate inoculation for GBS detection.
• Logit analysis to identify factors associated with GBS colonization.

Main Results:

• GBS was isolated from 18.0% of participants.
• Selective broth medium was more sensitive (17.2%) than direct plating (9.4%).
• Higher prevalence observed in women with IUDs (50%), sexually experienced women (20%), during the first half of the menstrual cycle (26.5%), and younger women (21.4%).

Conclusions:

• Vaginal GBS colonization is prevalent in college women.
• Intrauterine device use, sexual experience, younger age, and menstrual cycle phase are significant risk factors.
• Selective broth medium offers superior sensitivity for GBS detection.