Related Experiment Video
Updated: Jul 14, 2026

Antibiotic Efficacy Testing in an Ex vivo Model of Pseudomonas aeruginosa and Staphylococcus aureus Biofilms in the Cystic Fibrosis Lung
Published on: January 22, 2021
Flucloxacillin treatment of Staphylococcus aureus meningitis
S R Ritchie1, P Rupali, S A Roberts
1Department of Infectious Disease, Level 6 Support Building, Auckland City Hospital, Park Road, Grafton, Auckland, 1023, New Zealand. sritchie@adhb.govt.nz
Abstract:
In this paper, we aimed to evaluate the efficacy of flucloxacillin treatment of meningitis caused by methicillin-sensitive Staphylococcus aureus. We identified 33 patients with meningitis due to S. aureus; eight had community-acquired meningitis and 25 had neurosurgical meningitis. Six of the eight patients with community-acquired meningitis were cured. Eighteen of the 22 patients treated with flucloxacillin were cured without relapse (86%, 95%CI 65-97%) and their cerebrospinal fluid (CSF) cultures were sterile after a median of 3 days of treatment. The cure rate for 12 patients who also received an additional antibiotic at the outset of treatment was 75% (95%CI 43-95%). This was not different to the cure rate for the ten patients who received flucloxacillin alone 90% (95%CI 56-100%). We conclude that flucloxacillin is an effective treatment for meningitis caused by S. aureus.
Insights
Flucloxacillin effectively treats meningitis caused by methicillin-sensitive Staphylococcus aureus. This antibiotic achieved high cure rates and sterile cerebrospinal fluid cultures in patients with bacterial meningitis.
Area of Science:
- Infectious Diseases
- Neuroscience
- Pharmacology
Background:
- Meningitis caused by Staphylococcus aureus requires effective antibiotic treatment.
- Methicillin-sensitive Staphylococcus aureus (MSSA) strains necessitate evaluation of specific antibiotic therapies.
- Assessing treatment outcomes for both community-acquired and neurosurgical meningitis is crucial.
Purpose of the Study:
- To evaluate the efficacy of flucloxacillin in treating meningitis caused by MSSA.
- To compare cure rates and microbiological clearance with flucloxacillin monotherapy versus combination therapy.
Main Methods:
- Retrospective analysis of 33 patients diagnosed with S. aureus meningitis.
- Treatment efficacy assessed by cure rates, relapse, and cerebrospinal fluid (CSF) culture status.
- Comparison of outcomes between patients receiving flucloxacillin alone and those receiving additional antibiotics.
Main Results:
- Flucloxacillin demonstrated an 86% cure rate (95% CI 65-97%) in 22 treated patients, with sterile CSF cultures in a median of 3 days.
- No significant difference in cure rates was observed between flucloxacillin monotherapy (90%) and combination therapy (75%).
- Six of eight patients with community-acquired meningitis were cured.
Conclusions:
- Flucloxacillin is an effective therapeutic agent for S. aureus meningitis.
- The data support the use of flucloxacillin as a primary treatment for MSSA meningitis.
- Further research may explore optimal treatment durations and specific patient subgroups.
Related Concept Videos
Acute Pyelonephritis II: Diagnostic Studies and Management
Bacterial Meningitis
Bacterial Meningitis I: Introduction
Cryptococcal Meningitis
Brain Abscess l: Introduction
Mechanism of Antibiotic Resistance in MRSA