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Epidemiology of otitis media onset by six months of age

K A Daly1, J E Brown, B R Lindgren

  • 1Otitis Media Research Center, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA.

Pediatrics
|June 3, 1999
PubMed

Insights

Early acute otitis media (AOM) is linked to environmental factors, not prenatal ones. Reducing environmental exposures may decrease AOM and recurrent otitis media (ROM) rates in infants.

Area of Science:

  • Pediatrics
  • Otolaryngology
  • Epidemiology

Background:

  • Early-onset otitis media (OM) predicts later recurrent and chronic conditions.
  • Limited research exists on prenatal exposures influencing early OM.
  • This study investigates prenatal, innate, and environmental factors in early OM.

Purpose of the Study:

  • To examine prenatal, innate, and early environmental exposures associated with acute otitis media (AOM) onset.
  • To identify risk factors for recurrent OM (ROM) by age 6 months.

Main Methods:

  • Prospective study of 596 infants followed from birth to 6 months.
  • Mothers completed monthly questionnaires on prenatal and infant exposures.
  • Infant urine samples analyzed for cotinine; clinical examinations performed.

Main Results:

  • 39% of infants experienced AOM, 20% had ROM by 6 months.
  • Risk factors for AOM included respiratory infections, daycare, and family history of OM.
  • ROM associated with respiratory infections, daycare, conjunctivitis, and maternal OM history.

Conclusions:

  • Prenatal factors were not significantly linked to early AOM onset in multivariate analysis.
  • Environmental and innate factors play a crucial role in early AOM.
  • Reducing environmental exposures may decrease AOM and subsequent ROM rates.
Abstract

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