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Epidemiologic study of conjunctivitis-otitis syndrome

Edouard Bingen1, Robert Cohen, Nadejda Jourenkova

  • 1Service de Microbiologie, Hôpital Robert Debré, Paris, France. edouard.bingen@rdb.ap-hop-paris.fr

The Pediatric Infectious Disease Journal
|August 12, 2005
PubMed

Insights

Conjunctivitis-otitis syndrome in young children frequently involves bacterial infections. Haemophilus influenzae was the most common pathogen found in both eye and ear infections, with identical strains identified.

Area of Science:

  • Pediatric infectious diseases
  • Ophthalmology
  • Otolaryngology

Background:

  • Conjunctivitis-otitis syndrome is a common pediatric condition.
  • Bacterial pathogens are frequently implicated in this syndrome.

Purpose of the Study:

  • To investigate the epidemiologic characteristics of conjunctivitis-otitis syndrome.
  • To identify bacterial pathogens involved in conjunctivitis-otitis syndrome.
  • To determine the relationship between conjunctivitis and otitis media pathogens.

Main Methods:

  • Prospective cross-sectional epidemiologic study conducted over two winter periods.
  • Recruitment of 2901 children aged 6-36 months with acute otitis media.
  • Bacterial culture of conjunctival exudate and pulsed field gel electrophoresis (PFGE) for pathogen identification.

Main Results:

  • 16% of children with acute otitis media presented with purulent conjunctivitis.
  • Haemophilus influenzae was the predominant pathogen (89%) in conjunctival exudates.
  • PFGE confirmed identical H. influenzae strains in conjunctival and middle ear fluid isolates from 21 patients.

Conclusions:

  • Haemophilus influenzae is a key bacterial pathogen in conjunctivitis-otitis syndrome.
  • Identical strains suggest a common source or direct spread between conjunctiva and middle ear.
  • Further research is warranted to understand the pathogenesis and treatment implications.

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