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Ocular prevalence of methicillin-resistant Staphylococcus aureus increasing

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LAS VEGAS — The prevalence of ocular methicillin-resistant Staphylococcus aureus is increasing and must be continuously observed, according to a poster study presented here.

Penny A. Asbell, MD, MBA, and colleagues presented their analysis of current resistance patterns of ocular S. aureus. The researchers studied data provided by the Surveillance Network, an electronic database of strain-specific, qualitative and quantitative antimicrobial susceptibility tests reported by labs in the United States, according to the study.

The researchers found that of 13,978 cultures of ocular S. aureus samples tested from 2000 to 2005, 4,984 (35.7%) proved methicillin resistant, increasing from 29.5% of all cultured samples in 2000 to 41.6% in 2005, according to the study. Trends suggest that most ocular S. aureus infections will be methicillin resistant within the next few years, the authors said.

The study received a best poster award from the AAO Annual Meeting Program Committee.