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Indian J Med Microbiol. 2019 Jul-Sep;37(3):442-445. doi: 10.4103/ijmm.IJMM_19_404.

Determination of Biofilm-Forming Capacity of Otopathogens Isolated from Discharging Ears in Children with Chronic Otitis Media.

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Department of ENT, Christian Medical College, Vellore, Tamil Nadu, India.
Department of Clinical Microbiology, Christian Medical College, Vellore, Tamil Nadu, India.


Chronic otitis media is a common disease of the developing world with persistent ear discharge, leading to major complications. This study describes the microorganisms isolated from the middle ear and nasopharynx of children with chronically discharging ears. Middle ear and nasopharyngeal swabs from 89 children were studied, and the microorganisms isolated were assessed for biofilm-forming ability. Methicillin-susceptible Staphylococcus aureus was common in the nasopharynx, while the middle ear showed predominantly pseudomonas and Methicillin-resistant S. aureus. Pseudomonas aeruginosa showed strong biofilm formation, whereas Escherichia coli, Proteus sp. and Providentia sp. were weak biofilm producers. S. aureus isolates were negative for biofilm formation.


Chronic otitis media; Pseudomonas aeruginosa; Staphylococcus aureus; ear discharge; nasopharynx; otopathogens

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