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Characterisation of MRSA strains isolated from patients in a hospital... » Isaúde
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BMC microbiology [electronic resource]
2012-07-24 03:28:22

Characterisation of MRSA strains isolated from patients in a hospital in Riyadh, Kingdom of Saudi Arabia

Descrição: Background:Methicillin-resistant Staphylococcus aureus (MRSA) is spreading worldwide and poses aserious public health problem, being present in hospital settings and communities. However,from the Middle East and the Arabian Peninsula few molecular typing data on MRSA strainsare currently available. In order to obtain data on the population structure of MRSA inRiyadh, Saudi Arabia, 107 clinical and environmental MRSA isolates were genotyped using amicroarray-based assay.Results:Five major MRSA strains from four clonal complexes were identified CC8/ST239-III(20.75%), PVL-positive as well as -negative CC22-IV (18.87% and 9.43%, respectively),PVL-positive CC30-IV (12.26%) and PVL-positive CC80-IV (17.92%). Minor strains, whichaccounted for less than 3% each, included CC1-IV/SCCfus, PVL-positive CC1/ST772-V,PVL-positive as well as- negative CC5-IV, CC5-IV/SCCfus, CC5-V, CC6-IV, CC45-IV,PVL-negative CC80-IV, PVL-positive CC88-IV, CC97-V and a CC9/ST834-MRSA strain.Conclusions:Typing of MRSA strains from Riyadh revealed a high diversity of clonal complexes. Theprevalence of the genes encoding the Panton-Valentine leukocidin was surprisingly high(54.21%), and a significant rate of resistance markers was detected also in strains consideredas community-associated.

Identificador: doi:10.1186/1471-2180-12-146
Volume: 0
Página: 1 a


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