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Performance evaluation of a modified chromogenic medium, ChromID MRSA New, for the detection of methicillin-resistant Staphylococcus aureus from clinical specimens

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Abstract

A novel chromogenic medium for the detection of methicillin-resistant Staphylococcus aureus (MRSA), ChromID MRSA New, was evaluated and compared with the original ChromID MRSA agar, using 355 consecutive screening specimens from nose (120), throat (121) and perineum (114). The specimens were collected with an E-swab and inoculated within 24 hours onto both ChromID MRSA New and on ChromID MRSA. ChromID MRSA New was more sensitive than ChromID MRSA in detecting MRSA after 24 hours of incubation (94.3% versus 81.4%; p < 0.05). With the ChromID MRSA New, processing time is reduced from 48 h to 24 h and confirmation of the resistance to methicillin is redundant.

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Acknowledgments

We thank the team of hospital hygiene of Ghent University Hospital for their efforts.

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We acknowledge the support of bioMérieux by supplying the modified ChromID MRSA, the ChromID MRSA New, and for the financial support which made this study possible.

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Nothing to declare.

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Correspondence to F. Van Hoecke.

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Van Hoecke, F., Deloof, N. & Claeys, G. Performance evaluation of a modified chromogenic medium, ChromID MRSA New, for the detection of methicillin-resistant Staphylococcus aureus from clinical specimens. Eur J Clin Microbiol Infect Dis 30, 1595–1598 (2011). https://doi.org/10.1007/s10096-011-1265-3

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  • DOI: https://doi.org/10.1007/s10096-011-1265-3

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