Active Surveillance of Methicillin-Resistant <i>Staphylococcus aureus</i> Using a Fully Automated Molecular Test in an Emergency Medical Center

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  • Morinaga Yoshitomo
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Yamano Shuhei
    Emergency Medical Center, Nagasaki University Hospital
  • Akamatsu Norihiko
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Kaku Norihito
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Nagaoka Kentaro
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Migiyama Yohei
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Harada Yosuke
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Hosogaya Naoki
    Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Yamamoto Yoshihiro
    Department of Clinical Infectious Diseases, University of Toyama
  • Tasaki Osamu
    Emergency Medical Center, Nagasaki University Hospital
  • Yanagihara Katsunori
    Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • Kohno Shigeru
    Second Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences

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  • Active Surveillance of Methicillin-Resistant Staphylococcus aureus Using a Fully Automated Molecular Test in an Emergency Medical Center

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Abstract

The prevention and control of methicillin-resistant Staphylococcus aureus (MRSA) are important, particularly in emergency units. The active surveillance of MRSA was prospectively performed at the emergency medical center of Nagasaki University Hospital. After obtaining nasal swab specimens, a fully automated molecular test (FAMT) and a culture-screening method were utilized for MRSA detection. A total of 150 patients were enrolled in the study, and 366 nasal swab specimens were obtained. MRSA was detected by culture in 11 (7.3%) patients including one new acquisition and by the FAMT in 34 (22.7%) patients including 13 new acquisitions. The sensitivity, specificity, positive predictive value, and negative predictive value of the FAMT at the patient level were 86.7, 85.2, 39.4, and 98.3%, respectively, when compared with the culture-based results. An FAMT can effectively detect MRSA colonization, which may remain undetected with the conventional method, and it may be useful in detecting newly acquired MRSAs.

Journal

  • Japanese Journal of Infectious Diseases

    Japanese Journal of Infectious Diseases 68 (5), 376-380, 2015

    National Institute of Infectious Diseases, Japanese Journal of Infectious Diseases Editorial Committee

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