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Nasopharyngeal colonization of otopathogens in South Indian children with acuteotitis media -- A case control pilot study

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journal of Otology 2021年第4期16卷 220-224页

作者： M.Napolean V.Rosemol M.john A.M.Varghese j.periyasamy V.Balaji P.Naina Department of ENT Christian Medical CollegeVelloreTamil NaduIndia Department of Clinical Microbiology Christian Medical CollegeVelloreIndia

Background: Acute otitis media (AOM) is an inflammatory disease of the middle ear causing significantmorbidity in early childhood. A pilot study was undertaken to identify the role of various risk factorsSouth Indian children with AOM, especially the role of nasopharyngeal ***: A prospective case control pilot study was conducted in children aged below six years,presenting to a single tertiary care from 2018 to 2019. Fifty cases with AOM and 45 age and gendermatched controls were recruited. Two nasopharyngeal swabs were collected, one was processed forbacterial culture. The other swab was processed according to the CDC recommended broth enrichmentmethod to identify carriage of S. pneumoniae. Subsequent serotyping was done by Quellung method andconventional sequential multiplex ***: Otalgia was the major presentation seen in 92% of the children with AOM. None of the clinical anddemographic characteristics were found to be statistically significant between the cases and controls. Themost common otopathogen was S. pneumoniae (55%) followed by H. influenza (29%). The commonS. pneumoniae serotypes encountered were 11A and *** colonization with S. pneumoniae[OR 6.57, p < 0.003] and H. influenzae [OR14.18, p < 0.003] were significant risk factors for AOM inchildren. The risk increased with co-colonization (OR 13.89,p < 0.003).Conclusion: This study strengthens the significant association between nasopharyngeal colonization ofotopathogens and AOM as a risk factor that is enhanced by co-colonization.S. pneumoniae was the mainotopathogen in this population, serotypes 11A and 19F being the most common.

关键词： Acute otitis media Nasopharyngeal Otopathogens Case control study Streptococcus pneumoniae Haemophilus influenzae Moraxella catarrhalis Staphylococcus aureus

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