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Community-acquired methicillin-resistant Staphylococcus auereus in a Malaysian tertiary centre in year 2009

Introduction / objectives

Community-Acquired Methicillin-Resistant Staphylococcus aureus (CA-MRSA) is a pathogen recognized to be distinct from hospital-acquired MRSA phenotypically and genotypically. We aimed to identify CA-MRSA cases in UKMMC, their antibiotic susceptibility patterns and genotypic characteristics.

Methods

Cases were identified prospectively from January to December 2009, where culture and antibiotic susceptibility results yielding pauciresistant MRSA isolates were suspected as CA-MRSA. The patients’ clinical data were collected and their specimens were sent for molecular confirmation and analysis at IMR.

Results

Five cases of CA-MRSA were identified. The isolates had multisensitive pattern on antibiotic susceptibility testing and were resistant to only penicillin and oxacillin. All cases were skin and soft-tissue infections, namely diabetic foot with gangrene, infected scalp haematoma, philtrum abscess in a healthcare worker, thrombophlebitis complicated with abscess and infected bedsore. All five cases were confirmed MRSA by detection of mecA gene. SCCmec typing (ccr gene and mec complex gene) revealed SCCmec type IV for all except the infected bedsore case. Panton-Valentine Leucocidin gene was positive in all isolates.

Conclusion

The clinical confines between methicillin-sensitive Staphylococcus aureus, CA-MRSA and “nosocomial CA-MRSA” are indistinct. Early recognition is necessary in instituting appropriate antibiotics and infection control measures. Continued surveillance of pauciresistant MRSA and molecular analysis is useful to identify emerging strains and their epidemiology and transmission, both in the community as well as healthcare settings.

Disclosure of interest

None declared.

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This article is published under license to BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zainol Rashid, Z., Bahari, N., Othman, A. et al. Community-acquired methicillin-resistant Staphylococcus auereus in a Malaysian tertiary centre in year 2009. BMC Proc 5 (Suppl 6), P18 (2011). https://doi.org/10.1186/1753-6561-5-S6-P18

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  • DOI: https://doi.org/10.1186/1753-6561-5-S6-P18

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