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Predictive value of an adherence test for acute otitis media
J Danino1, H Z Joachims, M Barak
1Department of Otorhinolaryngology-Head and Neck Surgery, Rambam Medical Center and The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.
Summary
An in vitro adherence test accurately predicts recurrent otitis media in children. High Streptococcus pneumoniae adherence to cells indicates a high risk for developing acute otitis media (AOM).
Area of Science:
- Microbiology
- Pediatrics
- Infectious Diseases
Background:
- Recurrent otitis media is a common childhood illness.
- Predicting which children are prone to otitis media is crucial for early intervention.
- Streptococcus pneumoniae is a primary causative agent of otitis media.
Purpose of the Study:
- To determine the predictive value of an in vitro adherence test for Streptococcus pneumoniae.
- To assess the long-term (5-year) development of otitis media based on initial adherence test results.
Main Methods:
- Nasopharyngeal cells from 56 children (with and without acute otitis media) were tested for adherence of Streptococcus pneumoniae (capsular serotype 6).
- Adherence was measured microscopically and radioactively.
- Children were followed up for 5 years to record the incidence of otitis media.
Main Results:
- Children with acute otitis media showed significantly higher bacterial adherence than healthy children (p < 0.005).
- Four out of five healthy children with high adherence developed otitis media within 5 years.
- The test demonstrated a positive predictive value of 98.2% and a negative predictive value of 90.7%.
Conclusions:
- The in vitro adherence test for Streptococcus pneumoniae is a highly predictive tool for identifying children at risk of recurrent otitis media.
- This test can aid in early diagnosis and management strategies for otitis media in pediatric populations.