[Occurrence and susceptibility to antibiotics of Streptococcus pyogenes strains from purulent infections in soft

I Kania1, E Gospodarek, B Ulatowska

  • 1Katedry i Zakładu Mikrobiologii AM w Bydgoszczy.

Insights

Streptococcus pyogenes from soft tissue infections showed resistance to MLSB antibiotics. However, all strains remained susceptible to penicillin, new quinolones, and glycopeptides, indicating effective treatment options.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Antimicrobial Resistance

Context:

  • Focuses on Streptococcus pyogenes, a significant pathogen in soft tissue infections.
  • Examines isolates from both hospital and ambulatory patients between 1996-1998.
  • Analyzes a large sample size (3665) including wound swabs, pus, and ulcer swabs.

Purpose:

  • To determine the occurrence and antimicrobial susceptibility of Streptococcus pyogenes in purulent soft tissue infections.
  • To identify resistance patterns, specifically Macrolide-Lincosamide-Streptogramin B (MLSB) resistance.
  • To evaluate the effectiveness of common antibiotics against these isolates.

Summary:

  • 3665 samples yielded Streptococcus pyogenes, predominantly from shank ulcers (38.8%).
  • Of 59 S. pyogenes strains analyzed, 10.2% exhibited MLSB resistance.
  • All tested strains demonstrated susceptibility to penicillin, new quinolones, and glycopeptides.

Impact:

  • Highlights the prevalence of S. pyogenes in soft tissue infections and identifies key sources.
  • Provides crucial data on emerging antimicrobial resistance, particularly MLSB resistance.
  • Confirms the continued efficacy of penicillin, new quinolones, and glycopeptides for treating these infections.

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