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Incidence of bloodstream infections: a nationwide surveillance of acute care hospitals in Switzerland 2008–2014
  1. Niccolò Buetti1,
  2. Andrew Atkinson1,
  3. Jonas Marschall1,
  4. Andreas Kronenberg1,2,
  5. the Swiss Centre for Antibiotic Resistance (ANRESIS)
    1. 1Department of Infectious Diseases, University Hospital Bern, Bern, Switzerland
    2. 2Institute for Infectious Diseases, University of Bern, Bern, Switzerland
    1. Correspondence to Dr Niccolò Buetti; niccolo.buetti{at}


    Background Bloodstream infections are often associated with significant mortality and morbidity. We aimed to investigate changes in the epidemiology of bloodstream infections in Switzerland between 2008 and 2014.

    Methods Data on bloodstream infections were obtained from the Swiss antibiotic resistance surveillance system (ANRESIS).

    Results The incidence of bloodstream infections increased throughout the study period, especially among elderly patients and those receiving care in emergency departments and university hospitals. Escherichia coli was the predominant pathogen, with Enterococci exhibiting the most prominent increase over the study period.

    Conclusions The described trends may impact morbidity, mortality and healthcare costs associated with bloodstream infections.


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    • JM and AK provided equal contribution.

    • Collaborators R Auckenthaler, Synlab Suisse, Switzerland; A Cherkaoui, Bacteriology Laboratory, Geneva University Hospitals, Switzerland; V Gaia, Department of Microbiology, EOLAB, Bellinzona, Switzerland; O Dubuis, Viollier AG, Basel, Switzerland; A Egli, Clinical Microbiology Laboratory, University Hospital Basel, Switzerland; D Koch, Federal Office of Public Health, Bern, Switzerland; AK, Institute for Infectious Diseases, University of Bern, Switzerland; S Leib, Institute for Infectious Diseases, University of Bern, Switzerland; S Luyet, Swiss Conference of the Cantonal Ministers of Public Health, Switzerland; P Nordmann, Molecular and Medical Microbiology, Department of Medicine, University Fribourg, Switzerland; V Perreten, Institute of Veterinary Bacteriology, University of Bern, Switzerland; J-C Piffaretti, Interlifescience, Massagno, Switzerland; G Prod'hom, Institute of Microbiology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland; J Schrenzel, Bacteriology Laboratory, Geneva University Hospitals, Geneva, Switzerland; AF Widmer, Division of Infectious Diseases and Hospital Epidemiology, University of Basel, Switzerland; G Zanetti, Service of Hospital Preventive Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland; R Zbinden, Institute of Medical Microbiology, University of Zürich, Switzerland.

    • Contributors All authors conceived and designed the study. NB and AA analysed the data. NB, JM and AK wrote the manuscript. All authors contributed to the discussion and reviewed the manuscript. All authors commented and approved the final version of the paper.

    • Funding The ANRESIS database is funded by the Federal office of Public Health, the Conference of cantonal health ministers and the University of Bern, Switzerland.

    • Competing interests None declared.

    • Patient consent Obtained.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Data sharing statement No additional data are available.

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