Vancomycin-resistant Enterococcus faecium meningitis in adults: case series and review of the literature

Bettina M Knoll1, Matt Hellmann, Camille N Kotton

  • 1Department of Transplant and Immunocompromised Host Infectious Diseases, Infectious Diseases Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. bknoll@partners.org

Abstract

Insights

Vancomycin-resistant Enterococcus faecium meningitis is rare but deadly. Various drug combinations, including linezolid and daptomycin, show promise for bacterial cure, though an optimal regimen remains elusive.

Area of Science:

  • Infectious Diseases
  • Neuroscience
  • Pharmacology

Background:

  • Vancomycin-resistant Enterococcus faecium (VRE) meningitis is a rare but severe infection with high mortality.
  • Limited therapeutic options exist for treating VRE meningitis, and optimal treatment strategies are not well-established.

Observation:

  • A retrospective review identified 4 adult cases of VRE meningitis at Massachusetts General Hospital (1999-2011).
  • A literature search identified 18 additional published cases of VRE meningitis.

Findings:

  • Successful treatment of VRE meningitis was achieved with various antimicrobial agents, including linezolid, daptomycin, quinupristin-dalfopristin (QD), and chloramphenicol.
  • Treatment regimens included monotherapy and combination therapy, with intravenous (IV) and intrathecal (IT) administration considered.
  • One case with a vancomycin-resistant, linezolid-intermediate isolate was successfully treated with QD and daptomycin.

Implications:

  • Bacterial cure for VRE meningitis is achievable with diverse antimicrobial strategies.
  • The choice of therapy, including IV and IT routes, should consider drug properties.
  • The rarity of VRE meningitis precludes definitive identification of an optimal treatment regimen.

Related Concept Videos

Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
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...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
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...
Endocarditis III: Medical Management01:18

Endocarditis III: Medical Management

Infective endocarditis management involves a multifaceted approach encompassing infection prevention, lifestyle modifications, pharmacological therapy, and surgical management.Infection Prevention:Hand Hygiene: Thorough handwashing is crucial to prevent the spread of infection. Hand hygiene should be performed regularly, especially before and after using the restroom.Oral Hygiene: Good oral hygiene is essential. It includes brushing teeth immediately after waking up and before bed, flossing...