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Keiko Ito, Yatsuji Ito, Keisuke Mizuta, Haruko Ogawa, Tomoo Suzuki, Hideo Miyata, Naoki Kato, Kunitomo Watanabe, Kazue Ueno, Bacteriology of Chronic Otitis Media, Chronic Sinusitis, and Paranasal Mucopyocele in Japan, Clinical Infectious Diseases, Volume 20, Issue Supplement_2, June 1995, Pages S214–S219, https://doi.org/10.1093/clinids/20.Supplement_2.S214
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Abstract
A bacteriologic study of cases of chronic otitis media, chronic sinusitis, and paranasal mucopyocele diagnosed at Gifu University Hospital was performed between 1989 and 1992. Bacteria were isolated from all of 31 samples of discharge from the ears of patients with chronic otitis media, all of 14 mucosal biopsy specimens from patients with chronic sinusitis, 8 of 10 aspirate samples from patients with chronic sinusitis, and 9 of 15 aspirates samples from patients with mucopyocele. Cultures often yielded polymicrobial growth, with an average of 3.1, 3.8, and 4.2 species per positive specimen from chronic otitis media, chronic sinusitis, and mucopyocele, respectively. The most commonly encountered anaerobes were Peptostreptococcus, Propionibacterium, and Prevotella species; the most common aerobes were Staphylococcus and Streptococcus species. One strain of Prevotella melaninogenica highly resistant to ampicillin and two strains of Peptostreptococcus resistant to cefaclor were found.