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Mem Inst Oswaldo Cruz. 2007 Jun;102(4):539-40.

The presence of qacA/B gene in Brazilian methicillin-resistant Staphylococcus aureus.

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Programa de Pós Graduação em Vigilância Sanitária, Instituto Nacional de Controle de Qualidade em Saúde, Fiocruz, Rio de Janeiro, RJ, 21040-900, Brasil.


A total of 74 methicillin-resistant Staphylococcus aureus (MRSA) strains isolated from three government hospitals in 2002 and 2003 were examined concerning the distribution of qacA/B gene, which is the determinant of resistance to quaternary ammonium compounds largely employed in hospital disinfection. By polymerase chain reaction the qacA/B gene was found in 80% of the isolates, which is a significant result considering it is the first time that qacA/B gene is being reported for Brazilian MRSA strains and it is presented at a high rate.

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