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  • Title: [Bacterial flora in children with recurrent acute otitis media].
    Author: Zielnik-Jurkiewicz B, Kolczyńska M.
    Journal: Pol Merkur Lekarski; 2005 Feb; 18(104):146-50. PubMed ID: 17877118.
    Abstract:
    The aim of the study was to identify microorganisms and antimicrobial susceptibilities of pathogens from middle ear in children with recurrent acute otitis media and acute otitis media. The study comprised 83 children--42 with recurrent acute otitis media and 41 with acute otitis emdia classified for paracentesis. Agar, chocolate, blood and Chapman plates were inoculated for isolation of bacteria. The plates were incubated at 37 degrees C and examined at 24 hours. The susceptibility of bacteria was determined by disk diffusion technique containing concentration gradients for following antibiotics: penicillin, amoxicillin/clavulanate, ampicillin/sulbactam, cefaclor, cefprozil, cefuroxime, erythromycin, azithromycin, clinadamycin and trimethoprim/sulfamethoxazole. 217 organisms from middle ear in children with recurrent acute otitis media and 131 organisms from middle ear in children with acute otitis media were isolated. Most frequent cultured bacteria were: Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis--71.4% in recurrent acute otitis media and 47.3% in acute otitis media. We observed statistically significant (p < 0.05) increased of Moraxella catarrhalis in specimens from the middle ear in children with recurrent acute otitis media older than 2 years. The best susceptibility was observed to amoxicillin/clavulanate (79.7% of bacteria in children with recurrent acute otitis media and 83.2% of bacteria in children with acute otitis media). The most of organisms presented resistance to trimethoprim/sulfamethoxazole--65.9% of bacteria in children with recurrent acute otitis media and 62.6% of bacteria in children with acute otitis media. Our investigation showed that resistance to bacteria increase in children with recurrent acute otitis media, most frequent appear in children older than 2 years and depend on number of episodes of acute otitis media and day care.
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