Enterococcal meningitis: report of four cases and review

K B Stevenson1, E W Murray, F A Sarubbi

  • 1Department of Internal Medicine, James H. Quillen College of Medicine, East Tennessee State University, Johnson City 37614-0622.

Insights

Enterococcal meningitis is rare but serious, often affecting adults with underlying conditions and children with CNS issues. While mortality is 13%, optimal treatment strategies require further investigation.

Area of Science:

  • Infectious Diseases
  • Neurology
  • Microbiology

Background:

  • Enterococci are common causes of non-CNS infections but rarely cause meningitis.
  • Understanding enterococcal meningitis is crucial due to its uncommon but significant nature.

Observation:

  • This study reviewed 32 cases of enterococcal meningitis, including 4 new cases and 28 from literature.
  • Adult patients often had comorbidities, immunosuppression, CNS trauma/surgery, or extra-CNS enterococcal infections.
  • Pediatric cases frequently involved underlying CNS abnormalities like neural tube defects or hydrocephalus.

Findings:

  • Clinical presentation and cerebrospinal fluid (CSF) findings were typical of acute bacterial meningitis.
  • The overall mortality rate for enterococcal meningitis was 13%.
  • No definitive difference in mortality was observed between monotherapy and combination therapy in this small cohort.

Implications:

  • Enterococcal meningitis requires prompt recognition and management, especially in at-risk populations.
  • Further research is needed to establish optimal therapeutic regimens, potentially favoring combination therapy with aminoglycosides.
  • This study contributes to the understanding of a rare but potentially severe infectious disease.

Related Concept Videos

Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Bacterial Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...