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Updated: Aug 9, 2026

Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat
Published on: October 29, 2014
[Neonatal meningitis (personal contribution)]
Abstract:
The authors, after a review of the literature about etiology, pathogenesis, epidemiology, pathological anatomy and clinic of newborn meningitis, report a personal experience of 15 cases. The more frequent etiological agents were Gram-positive bacteria (60%) and in particular Listeria monocytogenes type 4 and Streptococcus agalactiae. Gram-negative bacteria were isolated in 40% of cases and E. coli presented the highest ratio. All patients were treated with ampicillin-CAF association intravenous for the first 3-5 days and then i.m. or oral. The survival ratio was 77% in case of Gram-positive meningitis and 83% in case of Gram-negative meningitis. Sequeles were observed only among patients with Gram-negative meningitis; it's important to remark that in these cases the etiological agent was CAF-resistant.
Insights
Newborn meningitis treatment with ampicillin-CAF showed high survival rates for both Gram-positive (77%) and Gram-negative (83%) bacterial infections. However, sequelae were noted in Gram-negative cases resistant to CAF.
Area of Science:
- Neonatal infectious diseases
- Bacteriology
- Clinical microbiology
Context:
- Newborn meningitis poses a significant threat to infant health, with diverse etiological agents and varying clinical outcomes.
- Understanding the epidemiology and treatment efficacy of bacterial meningitis in neonates is crucial for improving patient survival and reducing long-term complications.
Purpose:
- To analyze the etiology, treatment, and outcomes of 15 cases of neonatal meningitis.
- To evaluate the effectiveness of ampicillin-CAF treatment against different bacterial pathogens in neonatal meningitis.
- To identify risk factors for sequelae in neonatal meningitis survivors.
Summary:
- A review of 15 neonatal meningitis cases revealed Gram-positive bacteria (60%) and Gram-negative bacteria (40%) as primary etiological agents, with Listeria monocytogenes, Streptococcus agalactiae, and E. coli being most common.
- All neonates received ampicillin-CAF treatment, resulting in survival rates of 77% for Gram-positive and 83% for Gram-negative meningitis.
- Sequelae were exclusively observed in Gram-negative meningitis cases caused by CAF-resistant strains, highlighting treatment resistance as a critical factor.
Impact:
- This study underscores the importance of prompt diagnosis and appropriate antibiotic selection in managing neonatal meningitis.
- The findings emphasize the need for continued surveillance of antibiotic resistance patterns in neonatal pathogens.
- Effective treatment strategies, considering etiological agents and their resistance profiles, are vital for improving outcomes and minimizing long-term sequelae in affected infants.
Related Concept Videos
Bacterial Meningitis
Viral Meningitis
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology
Encephalitis l: Introduction

