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Updated: May 15, 2025

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Antimicrobial Resistance in Maternal Infections During Pregnancy
Tania Vlad1, Anca-Elena Eftenoiu2, Adela Voinescu1,3,4
1Doctoral School, Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania.
Vaginal imbalances during pregnancy can lead to infections from opportunistic bacteria. This study found Group B Streptococcus and E. coli were common, with significant antimicrobial resistance, posing risks to maternal and neonatal health.
Area of Science:
- Obstetrics and Gynecology
- Infectious Diseases
- Microbiology
Background:
- Vaginal microbiota imbalance, marked by low lactobacilli, permits opportunistic gastrointestinal bacteria.
- Aerobic bacteria in the genital tract during pregnancy correlate with adverse pregnancy outcomes.
- Peripartum infections and rising antimicrobial resistance threaten maternal and neonatal well-being.
Purpose of the Study:
- To analyze microbial isolates from pregnant women with infectious diseases.
- To identify prevalent bacterial species and assess antimicrobial resistance patterns.
- To understand the implications of maternal infections for pregnancy outcomes.
Main Methods:
- Retrospective observational study of microbial strains from pregnant women over one year.
- Analysis of 274 samples (cervical, urine, wound, amniotic fluid, etc.) from 246 women.
- Identification of bacterial species and antimicrobial susceptibility testing.
Main Results:
- Group B Streptococcus (GBS) was the most common cervical isolate (42.46%), followed by E. coli (30.16%).
- Significant resistance was observed: 9.63% of GBS strains resistant to penicillin, 23.36% multi-drug resistant (MDR).
- 50% of S. aureus isolates were Methicillin-resistant S. aureus (MRSA), and 54.54% were MDR.
Conclusions:
- Maternal infections, particularly with antibiotic-resistant bacteria, are critical risk factors during pregnancy.
- Early identification and management of these infections are essential for maternal and neonatal health.
- The study highlights the prevalence of GBS, E. coli, and S. aureus, along with concerning resistance rates.
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