Related Experiment Video
Updated: Dec 31, 2025

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291
Published on: December 10, 2016
Case Commentary: Delayed Cerebral Vasculitis Associated with the Development of Ceftriaxone-Resistant Pneumococcal
1Department of Medicine, Division of Infectious Diseases, McGovern Medical School UT Health, Houston, Texas, USA rodrigo.hasbun@uth.tmc.edu.
Abstract:
Mizrahi and colleagues present a well-described case of the emergence of drug resistance in Streptococcus pneumoniae meningitis during therapy with ceftriaxone monotherapy with a low bactericidal concentration in the cerebrospinal fluid. Adherence to international guidelines could possibly have prevented the emergence of this resistant isolate and the adverse outcome.
Insights
Drug resistance in Streptococcus pneumoniae meningitis emerged during ceftriaxone treatment due to low drug concentration. Following treatment guidelines could prevent such resistant strains and negative outcomes.
Area of Science:
- Infectious Diseases
- Microbiology
- Pharmacology
Background:
- Meningitis caused by Streptococcus pneumoniae is a serious infection.
- Ceftriaxone is a common antibiotic used for treating bacterial meningitis.
- Therapeutic drug monitoring is crucial for effective antibiotic treatment.
Observation:
- A case of Streptococcus pneumoniae meningitis was treated with ceftriaxone monotherapy.
- Low bactericidal concentrations of ceftriaxone were observed in the cerebrospinal fluid.
- Emergence of drug resistance in Streptococcus pneumoniae during treatment was documented.
Findings:
- The study describes the development of ceftriaxone resistance in Streptococcus pneumoniae during therapy.
- Low drug concentration in cerebrospinal fluid was associated with treatment failure and resistance.
- The resistant isolate led to an adverse outcome in the patient.
Implications:
- This case highlights the importance of maintaining adequate antibiotic concentrations at the infection site.
- Adherence to international guidelines for antibiotic therapy may prevent the emergence of drug resistance.
- The findings underscore the need for careful patient monitoring and potential dose adjustments in meningitis treatment.
Related Concept Videos
Acute Pyelonephritis II: Diagnostic Studies and Management
Pneumonia IV: Management
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
Pneumonia III: Complications and Assessment
Endocarditis III: Medical Management
Endocarditis II: Clinical Features of Infective Endocarditis
Acute Pyelonephritis I: Introduction

