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[Evaluation of rapid methods for detecting Streptococcus pyogenes. Systematic review and meta-analysis]

J Ruiz-Aragón1, R Rodríguez López, J M Molina Linde

  • 1Agencia de Evaluación de Tecnología Sanitaria de Andalucía (AETSA), Sevilla, España. jesusm.ruiz.ext@juntadeandalucia.es

Anales De Pediatria (Barcelona, Spain : 2003)
|March 30, 2010
PubMed

Insights

Rapid antigen tests for streptococcal pharyngitis show good diagnostic performance, with high sensitivity and specificity. However, these rapid tests should be confirmed with microbiological cultures to avoid false results.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Diagnostics

Background:

  • Streptococcal pharyngitis is a common reason for primary and pediatric consultations.
  • Inadequate treatment can lead to adverse effects and antibiotic resistance.
  • Rapid antigen tests offer quick diagnosis of Streptococcus pyogenes infections.

Purpose of the Study:

  • To assess the diagnostic accuracy of rapid antigen-detection tests for Streptococcus pyogenes in throat samples.

Main Methods:

  • Systematic review and meta-analysis of studies published between 2000 and 2009.
  • Searched databases including MedLine, Embase, and Cochrane Library.
  • Evaluated study quality using Quadas's criteria and performed meta-analysis.

Main Results:

  • Included 24 studies of moderate quality.
  • Overall sensitivity was 0.85 (95% CI, 0.84-0.87) and specificity was 0.96 (95% CI, 0.96-0.97).
  • Likelihood ratios indicated good diagnostic performance.

Conclusions:

  • Rapid antigen-detection tests demonstrate good accuracy for diagnosing streptococcal pharyngitis.
  • Results should be complemented with microbiological culture due to potential false positives and negatives.
Abstract

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