The EPISA study: antimicrobial susceptibility of Staphylococcus aureus causing primary or secondary skin and soft tissue infections in the community in France, the UK and Ireland

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Abstract

Objectives

To provide information on the susceptibility of Staphylococcus aureus causing skin and soft tissue infections (SSTIs) in France, Ireland and the UK.

Patients and methods

One thousand three hundred and ninety patients attending their general practitioners for skin infections were recruited. Susceptibility to 11 antimicrobials using CLSI (formerly NCCLS) broth microdilution was determined for 646 S. aureus isolates detected in the evaluable patient population.

Results

Susceptibility results were similar in the UK and Ireland, but differed in France. The largest difference between countries was observed for erythromycin and fusidic acid. In France, 67.8% of isolates were susceptible to erythromycin when compared with 88.6% in Ireland and 92.8% in the UK. However, 93.7% of French isolates were susceptible to fusidic acid, compared with 68.6% in Ireland and 75.6% in the UK. A diagnosis of impetigo was associated with reduced fusidic acid susceptibility.

Conclusions

Differences in the prevalence of certain diagnoses, particularly impetigo, rather than differences in antibiotic consumption may explain some of the observed differences in susceptibility seen between these countries.

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