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Staphylococcus aureus bacteremia, Australia.

Peter Collignon1, Graeme R Nimmo, Thomas Gottlieb

  • 1The Canberra Hospital, Garran, Australian Capital Territory, Australia. peter.collignon@act.gov.au

Emerging Infectious Diseases
|April 15, 2005
PubMed
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Staphylococcus aureus bacteremia (SAB) is a growing global concern. In Australia, nearly half of SAB cases originate in the community, with methicillin-resistant S. aureus (MRSA) increasingly prevalent in these infections.

Area of Science:

  • Infectious Diseases
  • Epidemiology
  • Microbiology

Background:

  • Staphylococcus aureus bacteremia (SAB) is a significant and increasing global health issue.
  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a growing challenge in both hospital and community settings.
  • Understanding the epidemiology of SAB is crucial for effective public health strategies.

Purpose of the Study:

  • To quantify the incidence and place of acquisition of SAB in Australian hospitals.
  • To determine the proportion of SAB cases caused by MRSA.
  • To estimate the annual burden of SAB in Australia.

Main Methods:

  • A retrospective review of 3,192 SAB episodes across 17 Australian hospitals.
  • Analysis of case acquisition (hospital-onset vs. community-onset).

Related Experiment Videos

  • Calculation of SAB incidence rates per 1,000 admissions.

    • Main Results:

    • 49% of SAB episodes were community-onset.
    • MRSA accounted for 40% of hospital-onset and 12% of community-onset SAB.
    • An estimated 6,900 episodes of SAB occur annually in Australia (35/100,000 population).

    Conclusions:

    • SAB is a common and potentially preventable condition in Australia.
    • The epidemiology of SAB is evolving, with a notable increase in community-onset MRSA infections.
    • Findings have implications for empirical antimicrobial prescribing for suspected SAB.