• J. Hosp. Infect. · Jun 2016

    Enhanced surveillance of Staphylococcus aureus bacteraemia to identify targets for infection prevention.

    • A K Morris and C D Russell.
    • Department of Clinical Microbiology and Infection Control, Victoria Hospital, Kirkcaldy, Fife, UK. Electronic address: keith.morris@nhs.net.
    • J. Hosp. Infect. 2016 Jun 1; 93 (2): 169-74.

    BackgroundSurveillance of Staphylococcus aureus bacteraemia (SAB) in Scotland is limited to the number of infections per 100,000 acute occupied bed-days and susceptibility to meticillin.AimTo demonstrate the value of enhanced SAB surveillance to identify targets for infection prevention.MethodsProspective cohort study of all patients identified with SAB over a five-year period in a single health board in Scotland. All patients were reviewed at the bedside by a clinical microbiologist.FindingsIn all, 556 SAB episodes were identified: 261 (46.6%) were hospital-acquired; 209 (37.9%) were healthcare-associated; 80 (14.4%) were community-acquired; and in six (1.1%) the origin of infection was not hospital-acquired, but could not be separated into healthcare-associated or community-acquired. These were classified as non-hospital-acquired. Meticillin-resistant S. aureus (MRSA) bacteraemia was associated with hospital-acquired and healthcare-associated infections. In addition, there was a significantly higher 30-day mortality associated with hospital-acquired (31.4%) and healthcare-associated (16.3%) infections compared to community-acquired SAB (8.7%). Vascular access devices were associated with hospital-acquired SAB and peripheral venous cannulas were the source for most of these (43.9%). Community-acquired infections were associated with intravenous drug misuse, respiratory tract infections and skeletal and joint infections. Skin and soft tissue infections were more widely seen in healthcare-associated infections.ConclusionThe data indicate that enhanced surveillance of SAB by origin of infection and source of bacteraemia has implications for infection prevention, empirical antibiotic therapy, and health improvement interventions.Copyright © 2016 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

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