Journal

The Journal of the Japanese Society for Clinical Microbiology

Biblioraphy Information

[Vol.18 No.1 contents]
Japanese / English

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Article in Japanese

ArticleTitle The Survy of Methicillin-resistant Staphylococcus aureus Nasal Cultures in the Hosptal during Past 7 Years
Language J
AuthorList Yoshito Tsujihara1), Tadashi Honma1), Kouji Yoshikawa2), Iwao Sakurai2), Mikiko Yamada3)
Affiliation 1) Department of Clinical Laboratory, Kanagawa Prefectural Shiomidai Hospital
2) Department of Internal Medicine, Kanagawa Prefectural Shiomidai Hospital
3) Department of Clinical Laboratory, Yokohama City Institute of Health
Publication J.J.C.M.: 18 (1), 8-14, 2008
Received July 4, 2007
Accepted November 28, 2007
Abstract In our hospital we perform nasal cultures on admission of patients to control infection in the hospital. We investigated the status of the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in the nasal cavity during the 7 years from January 2000 to December 2006. A total of 5,534 patients were examined during this period. Of these patients, 259 had a positive culture for MRSA (prevalence, 4.7%). Eradication with mupirocin (MUP) was attempted in 112 of the 259 patients. MUP was used in 43.2% of the patients. To assess the effectiveness of this eradication therapy, we performed nasal cultures in 58 of the 112 patients (51.8%) after completion of treatment with MUP. Eradication was achieved in 34 of the 58 patients (58.6%). Furthermore, the strain which has high similarity was detected from 4 persons among 7 persons who were able to examine the genomic homogeny of MRSA detected at the time of primary hospitalization and re-hospitalization. It is controversial whether eradication therapy should be performed in all patients, but the finding that laboratory cultures were performed only in 51.8% of the patients for the assessment of the effectiveness of this eradication therapy with MUP indicates that there was a problem in the treatment measures after admission. The present study suggests that a strategy for eradication therapy against so-called carried-in MRSA should be established in the future.
Keywords methicillin resistant Staphylococcus aureus, mupirocin, pulsed field gel electrophoresis
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