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  • Title: Nasopharyngeal reservoir of bacterial otitis media and sinusitis pathogens in adults during wellness and viral respiratory illness.
    Author: Chi DH, Hendley JO, French P, Arango P, Hayden FG, Winther B.
    Journal: Am J Rhinol; 2003; 17(4):209-14. PubMed ID: 12962190.
    Abstract:
    BACKGROUND: The carriage rate of pathogenic bacteria in the nasopharynx (NP) was determined using three separate techniques for obtaining samples. METHODS: The NP of 99 healthy adults was sampled with (1) nasal swab, (2) oral swab, and (3) nasal aspiration; 49 adults with common cold were sampled with an oral swab and nasal aspiration. Three selective agars were used to detect Streptococcus pneumoniae, Hemophilus influenzae, and Moraxella catarrhalis. RESULTS: Seventy-three percent of healthy adults and 74% of cold sufferers had at least one pathogen detected in the NP. Detection rates were 65% (oral NP swab), 38% (catheter aspiration), and 28% (nasal swab; p < 0.001). Carriage rates for S. pneumoniae, M. catarrhalis, and H. influenzae were 45, 33, and 30%, respectively. Both a nasal and an oral sample were required for optimal detection. CONCLUSION: Bacterial pathogens were present in the NP of three-quarters of adults during wellness and during colds.
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