JAC Advance Access originally published online on June 12, 2003
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Journal of Antimicrobial Chemotherapy (2003) 52, 132-134
© 2003 The British Society for Antimicrobial Chemotherapy
Criteria of time and antibiotic susceptibility in the elimination of duplicates when calculating resistance frequencies
1 Hospital General Universitario de Elche, S. de Microbiología, 03203-Elche-Alicante; 2 Hospital Vega Baja, S. Medicina Preventiva, Orihuela; 3 Universidad Miguel Hernandez, Spain
Received 5 February 2003; returned 2 April 2003; revised 23 April 2003; accepted 23 April 2003
We studied the effects of various systems of eliminating repeat isolates on the absolute number and susceptibility of Pseudomonas aeruginosa, Acinetobacter baumannii and Staphylococcus aureus isolates over a 2 year period. The criterion of time is objective and reproducible, whereas that of variation in antibiotic susceptibility detects variations in the susceptibility of microorganisms that acquire resistance during treatment, but may be affected by methodological errors in determining the antibiotic susceptibility. These tools are useful in the control of multi-resistant bacteria and enable the true situation regarding antibiotic resistance in each geographical area to be determined.
Keywords: Pseudomonas aeruginosa, Acinetobacter baumannii, Staphylococcus aureus
* Corresponding author. Tel: +34-966679493; Fax: +34-966679108; E-mail: micro_elx{at}gva.es
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