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Molecular characterization of Enterobacteriaceae resistant to carbapenem antimicrobials

Caracterização molecular de enterobactérias resistentes aos carbapenêmicos

ABSTRACT

The present study aimed to genotypically and phenotypically characterize clinical isolates of carbapenem-resistant Enterobacteriaceae collected from inpatients at the University Hospital of Santa Maria, during seven months. Among the clinical isolates subjected to the modified Hodge test (MHT), 62.5% were positive, indicating possible production of carbapenemase. Polymerase chain reaction (PCR) demonstrated that blaKPC was the most frequently found gene (31%), followed by blaIMP (12.5%). Combined use of the methods is needed to identify carbapenem resistance in enterobacteria to prevent their spread and control the infections caused by these organisms.

Key words:
Enterobacteriaceae ; carbapenemase; phenotypic methods; molecular methods

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