Childhood meningitis in the conjugate vaccine era: a prospective cohort study

Manish Sadarangani1, Louise Willis1, Seilesh Kadambari2

  • 1Department of Paediatrics, University of Oxford, and the NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK.

Insights

Viral meningitis is now more common than bacterial meningitis in UK children. Early diagnosis using cerebrospinal fluid (CSF) and C-reactive protein (CRP) levels is crucial for effective treatment and reducing antibiotic use.

Area of Science:

  • Pediatric infectious diseases
  • Epidemiology of meningitis
  • Clinical diagnostics

Background:

  • Bacterial conjugate vaccines have significantly altered childhood meningitis epidemiology.
  • Viral meningitis is increasingly prevalent, yet current UK epidemiology remains unclear.
  • Understanding contemporary meningitis causes in children is essential for public health.

Purpose of the Study:

  • To determine the current epidemiology of meningitis in children under 16 in the UK.
  • To identify causative pathogens and compare clinical features and diagnostic markers.
  • To highlight the need for improved diagnostics for non-bacterial meningitis.

Main Methods:

  • Prospective study involving children under 16 with suspected meningitis across 3 UK hospitals.
  • Pathogen identification in cerebrospinal fluid (CSF) and clinical data collection.
  • Analysis of clinical features, CSF white blood cell count, plasma C-reactive protein (CRP), and CSF protein levels.

Main Results:

  • Of 388 children, 70 had meningitis: 13 bacterial, 26 viral, and 29 with unidentified pathogens.
  • Group B Streptococcus was the most frequent bacterial cause.
  • CSF white blood cell count, plasma CRP, and CSF protein (in infants <3 months) differentiated bacterial from viral meningitis.

Conclusions:

  • Viral meningitis is now predominant in the studied UK pediatric population.
  • Clinical features were only distinct in infants (<3 months) with bacterial meningitis.
  • Enhanced diagnostic methods for non-bacterial meningitis are critical to optimize antibiotic stewardship and reduce hospital stays.

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