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We describe an outbreak caused by KPC-2- and IMP-10-producing Serratia marcescens isolates in a Brazilian teaching hospital. Tigecycline was the only active antimicrobial agent tested. The blaIMP-10 gene was located in a new class 1 integron, named In990, carried by a nonconjugative plasmid, in contrast to blaKPC-2.
Metallo-beta-lactamase production is an important mechanism for carbapenem resistance of Pseudomonas aeruginosa , which represents an emerging public health challenge. We report the case of a patient admitted to an intensive care unit, with sepsis caused by multidrug-resistant São Paulo Metallo-beta-lactamase-1-producing P. aeruginosa . This is the first… (More)
Background Resistance of Klebsiella pneumoniae to carbapenems is mainly associated with acquired carbapenem-hydrolyzing b-lactamases . These b-lactamases can be metallo b-lactamases (IMP, VIM), expanded-spectrum oxacilli-nases (OXA-48), or Ambler class A enzymes (NMCA, IMI, SME, GES, and KPC) [1,2]. The most common class A carbapenemases in K. pneumoniae… (More)