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KMID : 0363220120500090788
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Korean Journal of Dermatology
2012 Volume.50 No. 9 p.788 ~ p.794
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Isolation of the Causative Microorganism and Antimicrobial Susceptibility of Impetigo
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Kim Woo-Joong
Lee Kyung-Real
Lee Sang-Eun
Lee Hee-Jung
Yoon Moon-Soo
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Abstract
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Background: Impetigo is a common bacterial infection caused by Staphylococcus aureus, and group A beta-hemolytic Streptococcus or both. Recently, S. aureus has been reported as the most frequently isolated pathogen of impetigo and the incidence of methicillin-resistant S. aureus (MRSA) among patients with impetigo has increased.
Objective: To investigate the predominant microorganism and the antibiotic susceptibility of the impetigo causative pathogen.
Methods: Bacterial culture and antimicrobial susceptibility testing were performed in patients with impetigo from June 2006 to May 2012.
Results: Of 164 patients, bacteria were cultured from 139 patients. Among them, S. aureus was isolated from 114 (82%) patients. The others were Acinetobacter baumannii, Enterobactercloacae, Enterococcus species, Enterococcus faecium, Enterococcus faecalis, Klebsiella oxytoca, and Candida albicans. The resistance rates of S. aureus against antibiotics were as follows: penicillin, 95.6%; erythromycin, 43.9%; fusidicacid, 38.1%; clindamycin, 24.5%; gentamycin, 21%; tetracycline, 12.3%; trimethoprim-sulfamethoxazole, 0.9%; ciprofloxacin, 0%; habekacin, 0%; linezolid, 0%; teicoplanin, 0%; and vancomycin, 0%. Thirty-four (29.8%) S. aureus isolates were MRSA, and the prevalence of MRSA increased during the 6-year period.
Conclusion: The most predominant pathogen in impetigo was S. aureus, which was sensitive to ciprofloxacin, habekacin, linezolid, trimethoprim-sulfamethoxazole, teicoplanin, and vancomycin. An increase in the prevalence of MRSA was observed during the 6-year period, and the effective antibiotics for MRSA were trimethoprim-sulfamethoxazole, teicoplanin and vancomycin.
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KEYWORD
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Antibiotics susceptibility, Impetigo, MRSA, Staphylococcus aureus
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