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Serous otitis media in children: implication of Alloiococcus otitidis

Isabel de Miguel Martinez1, Angel Ramos Macias

  • 1Department of Microbiology, University and Children's Hospital Insular of Las Palmas, Gran Canaria, Spain.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|April 18, 2008
PubMed
Abstract

Insights

A study found Alloiococcus otitidis in nearly half of otitis media with effusion (OME) cases, challenging the view of OME as noninfective. Further research is needed to confirm if this bacterium causes OME.

Area of Science:

  • Otolaryngology
  • Pediatric Infectious Diseases
  • Microbiology

Background:

  • Otitis media with effusion (OME) has traditionally been viewed as a noninfective condition linked to eustachian tube dysfunction.
  • Emerging microbiological evidence suggests a potential infectious etiology for OME, with the detection of bacteria in middle ear effusions.

Purpose of the Study:

  • To investigate the prevalence and role of Alloiococcus otitidis in pediatric patients diagnosed with otitis media with effusion (OME).
  • To compare the microbiological findings in OME with those in acute otitis media (AOM).

Main Methods:

  • A prospective clinical trial was conducted at a tertiary university-based referral center.
  • Bacterial analysis of middle ear effusions (MEEs) was performed using culture-specific microbiological techniques.
  • The study included 110 patients aged 1-12 years, with groups for OME, acute otitis media, and healthy controls.

Main Results:

  • Bacteria were identified in 72.5% of OME patient cultures.
  • Alloiococcus otitidis was the most frequently isolated bacterium in OME (48.27%), often as the sole organism.
  • Haemophilus influenzae and Streptococcus pneumoniae were also detected, with S. pneumoniae being more common in AOM.

Conclusions:

  • A high rate of Alloiococcus otitidis culture positivity was observed in patients with OME, suggesting a potential causative role.
  • Further investigation is required to establish a causal link between A. otitidis and OME.
  • Reported antibiotic resistance to A. otitidis highlights the importance of understanding its pathogenetic role in OME.

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