Antimicrobial resistance in Staphylococcus aureus in Australian teaching hospitals, 1989-1999
Date
2003
Authors
Nimmo, G.
Bell, J.
Mitchell, D.
Gosbell, I.
Pearman, J.
Turnidge, J.
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Journal article
Citation
Microbial Drug Resistance, 2003; 9(2):155-160
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Graeme R. Nimmo, Jan M. Bell, David Mitchell, Iain B. Gosbell, John W. Pearman, and John D. Turnidge.
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Abstract
An annual survey of antimicrobial resistance in clinical isolates of Staphylococcus aureus was conducted in 21 Australian teaching hospital microbiology laboratories in eight major cities from 1989 to 1999. A total of 19,000 isolates were tested for susceptibility to 18 antimicrobials, with 3795 being methicillin-resistant (MRSA). Resistance to ciprofloxacin in MRSA increased from 4.9% to 75.9%. The proportion of MRSA resistant to erythromycin decreased significantly (99.0%-88.9%), as did that to trimethoprim (98.4%-82.4%) and to tetracycline (96.5%-80.1%). The proportion of MRSA isolated increased in Sydney, Melbourne, Canberra, Adelaide, Perth, and Darwin, but not in Brisbane. The proportion in Hobart peaked in 1994. MRSA in Perth were predominantly non-multiresistant (nmMRSA) throughout the survey (i.e., resistant to less than three of eight indicator antibiotics) due mainly to local strains that originated in the community. The proportion of nmMRSA increased to modest levels in the other cities. In eastern cities, this was due to the appearance of strains closely related to nmMRSA seen in other countries of the southwestern Pacific.
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©2012 Mary Ann Liebert, Inc. publishers. All rights reserved, USA and worldwide