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Infections with Rhodococcus equi in children.

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Area of Science:

  • Medical Microbiology
  • Pediatric Infectious Diseases

Background:

  • Rhodococcus equi is an emerging pathogen, rarely reported in pediatric populations.
  • Accurate laboratory identification can be challenging, with potential misidentification as Corynebacterium or Mycobacterium species.

Observation:

  • This report details three pediatric cases of serious Rhodococcus equi infection, including the first two documented instances of bacteremia.
  • Historically, only seven pediatric cases of R. equi infection have been published.

Findings:

  • Despite a significant mortality rate in adults (25%), no pediatric deaths have been attributed to R. equi.
  • The organism shows susceptibility to common antibiotics like vancomycin, aminoglycosides, chloramphenicol, and erythromycin.
  • Combined antibiotic therapy was effective in resolving infections in all three reported pediatric cases.

Implications:

  • Rhodococcus equi should be considered an important potential pathogen in pediatric infections.
  • Further research is needed to determine optimal antibiotic treatment durations for pediatric R. equi infections.
  • Early recognition and appropriate multi-drug treatment are crucial for favorable outcomes in children.