Related Experiment Video
Updated: May 23, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
Published on: February 23, 2014
Meningitis in a Canadian adult due to high level penicillin-resistant, cefotaxime-intermediate Streptococcus
C Tremblay1, A M Bourgault, P St-Antoine
1Service de microbiologie et maladies infectieuses, Hôpital St-Luc et Département de microbiologie et maladies infectieuses, Hôpital Notre-Dame, Montréal, Québec.
Abstract:
Invasive penicillin-resistant pneumococcal (PRSP) infections are increasing worldwide. In Canada, the incidence of penicillin resistance among Streptococcus pneumoniae isolates is estimated at greater than 6%. In Quebec, only one case of PRSP meningitis has been reported and involved an infant. An adult patient is described who presented with meningitis caused by high level penicillin-resistant, cefotaxime-intermediate S pneumoniae.
Insights
Penicillin-resistant Streptococcus pneumoniae (PRSP) meningitis is a growing global concern. This case highlights a rare instance of PRSP meningitis in an adult, emphasizing the need for vigilance.
Area of Science:
- Infectious Diseases
- Microbiology
- Neurology
Background:
- Invasive penicillin-resistant pneumococcal (PRSP) infections are a rising global health threat.
- Penicillin resistance in Streptococcus pneumoniae exceeds 6% in Canada.
- PRSP meningitis is exceptionally rare in adults, with only one prior pediatric case reported in Quebec.
Observation:
- An adult patient presented with symptoms indicative of meningitis.
- Cerebrospinal fluid analysis revealed Streptococcus pneumoniae as the causative agent.
- The S. pneumoniae isolate exhibited high-level penicillin resistance and cefotaxime intermediacy.
Findings:
- The study details a unique case of meningitis in an adult caused by highly penicillin-resistant S. pneumoniae.
- This represents the second reported case of PRSP meningitis in Quebec, and the first in an adult.
- The pathogen demonstrated resistance to penicillin and intermediate resistance to cefotaxime.
Implications:
- This case underscores the potential for PRSP meningitis to occur in adult populations.
- It highlights the importance of antimicrobial susceptibility testing for Streptococcus pneumoniae isolates.
- Clinicians should maintain a high index of suspicion for resistant pneumococcal meningitis in severe infections.
Related Concept Videos
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology
Pneumonia I: Introduction
Pneumonia I: Introduction
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Mechanism of Antibiotic Resistance in MRSA
Atypical Pneumonia

