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Dynamics of PCR-based diagnosis in patients with invasive meningococcal disease

E Bronska1, J Kalmusova, O Dzupova

  • 1Second Medical Faculty, Charles University, First Department of Infectious Diseases, Prague, Czech Republic. e.bronska@seznam.cz

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|January 31, 2006
PubMed

Insights

Rapid PCR testing of cerebrospinal fluid (CSF) and serum is crucial for diagnosing invasive meningococcal disease. Early sample collection significantly improves the detection rates of meningococcal bacteria.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Molecular Diagnostics

Background:

  • Invasive meningococcal disease (IMD) poses a significant threat, necessitating prompt diagnosis for effective treatment.
  • Accurate and timely diagnostic methods are essential for managing IMD.
  • Polymerase Chain Reaction (PCR) offers a sensitive approach for detecting microbial DNA.

Purpose of the Study:

  • To evaluate the efficacy of PCR in diagnosing meningococcal etiology.
  • To assess the diagnostic yield of PCR over time in different biological samples.
  • To compare PCR-based diagnosis with traditional culture methods for IMD.

Main Methods:

  • Analysis of 60 cerebrospinal fluid (CSF) and 144 serum samples from 37 IMD patients.
  • Utilized PCR for detecting Neisseria meningitidis DNA.
  • Compared PCR results with standard culture techniques for CSF and blood.

Main Results:

  • PCR detected meningococcal DNA in 91.9% of CSF samples and 45.9% of serum samples.
  • Culture methods yielded positive results in only 35% of CSF and 39% of blood samples.
  • PCR positivity was maintained up to day 7 for CSF and day 5 for serum samples.

Conclusions:

  • PCR is a highly sensitive method for diagnosing invasive meningococcal disease compared to culture.
  • Early collection of CSF and serum samples is recommended for optimal PCR-based diagnosis.
  • Molecular diagnostics, particularly PCR, should be prioritized in the early stages of suspected IMD.

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