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One third of middle ear effusions from children undergoing tympanostomy tube placement had multiple bacterial

Robert C Holder1, Daniel J Kirse, Adele K Evans

  • 1Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston Salem, NC 27101, USA.

BMC Pediatrics
|June 30, 2012
PubMed
Abstract

Insights

Acute otitis media (AOM) is primarily a single-organism infection, most often caused by Haemophilus influenzae. Otitis media with effusion (OME) shows a more varied microbial landscape, including polymicrobial infections.

Area of Science:

  • Otolaryngology
  • Microbiology
  • Pediatrics

Background:

  • Otitis media is increasingly recognized as a polymicrobial disease.
  • Previous research suggests a complex etiology for middle ear infections.

Purpose of the Study:

  • To prospectively analyze middle ear effusions for common otopathogens.
  • To differentiate microbial findings in acute otitis media (AOM) versus otitis media with effusion (OME).

Main Methods:

  • Collected middle ear effusions from 207 children undergoing tympanostomy tube placement.
  • Utilized multiplex polymerase chain reaction (PCR) to detect Haemophilus influenzae, Streptococcus pneumoniae, Alloiococcus otitidis, and Moraxella catarrhalis DNA.
  • Classified effusions as AOM (purulent) or OME (non-purulent) based on surgical observation.

Main Results:

  • 57% of patients tested positive for at least one of the four targeted otopathogens.
  • AOM samples showed a higher prevalence of bacterial identification (87%) compared to OME (51%).
  • Haemophilus influenzae was the predominant pathogen in AOM, identified as a single organism in 74% of AOM cases.

Conclusions:

  • Haemophilus influenzae, Streptococcus pneumoniae, Alloiococcus otitidis, and Moraxella catarrhalis are frequently found in pediatric otitis media.
  • AOM is predominantly a single-organism infection, commonly caused by Haemophilus influenzae.
  • OME exhibits a more diverse microbial profile, including single organisms, polymicrobial infections, and potentially non-bacterial agents.

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