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Updated: Aug 11, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
Neonatal sepsis 1991-2001: prevalent bacterial agents and antimicrobial susceptibilities in Bahrain
Khalid M Bindayna1, Afaf Jamsheer, Eman Farid
1Department of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain. bindayna@agu.edu.bh
Insights
Neonatal sepsis is primarily caused by Gram-positive bacteria like coagulase-negative Staphylococcus. While antibiotic sensitivity remains largely stable, rising fungal infections require attention for effective neonatal care.
Area of Science:
- Neonatal Medicine
- Infectious Diseases
- Microbiology
Background:
- Neonatal sepsis remains a significant cause of mortality and morbidity worldwide.
- Understanding causative organisms and their antimicrobial susceptibility is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To track changes in neonatal sepsis pathogens and antibiotic sensitivities over an 11-year period.
- To evaluate the effectiveness of group B streptococci (GBS) screening policies in local settings.
Main Methods:
- Retrospective review of medical records for infants with positive blood cultures.
- Data collected from two hospitals between 1991-2001 and 1999-2001.
Main Results:
- Culture-proven bacteremia occurred in 4.19% of neonates.
- Coagulase-negative Staphylococcus (CoNS) was the most common pathogen (41%), followed by Escherichia coli (10%).
- An increasing trend in Candida isolation (5.7%) was observed, alongside stable sensitivities to penicillin G, erythromycin, and clindamycin for Gram-positive bacteria.
Conclusions:
- High-quality specimens are vital for accurate identification of pathogens like CoNS.
- The rising incidence of fungal infections necessitates targeted interventions.
- Local epidemiological data should guide the development of specific policies for GBS prevention.
Objectives:
To investigate the organisms causing neonatal sepsis and their modifications over an extended period, to assess their changing sensitivities to antibiotics and to verify whether the policy for screening pregnant women for group B streptococci (GBS) carriage is desirable in our settings.
Subjects And Methods:
Medical records of all infants with positive blood culture from the Neonatal Intensive Care Unit at Salmaniya Medical Complex between 1991 and 2001 and Bahrain Defense Force Hospital between 1999 and 2001 were reviewed.
Results:
Of the 7,978 neonates in both hospitals 335 (4.19%) had culture-proven bacteremia. Gram-positive bacteria were isolated at constant rate over the 11-year period. The main agents isolated were coagulase-negative Staphylococcus (CoNS) in 138 cases (41%), Staphylococcus aureus in 28 newborns (8%) and GBS in 26 patients (7.8%, 0.2/1,000 live births). All of them were sensitive to penicillin G, erythromycin and clindamycin. Gram-negative bacteria were declining but Escherichia coli was isolated in 35 cases (10%). Of special concern is the increasing percentage (5.7%) of Candida isolation. No clear trend toward increasing resistance was observed, although a major difference among the two institutions was evident. Klebsiella and Enterobacter spp. showed resistance to many of the antibiotics tested, thereby posing difficult therapeutic choices.
Conclusion:
Good quality specimens are essential to evaluate the role of CoNS. The increasing threat of fungal infection must be carefully tackled. Specifically tailored policies for GBS prevention must be defined according to the local epidemiology.
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