Extended-spectrum β-lactamase (ESBL)-producing Gram-negative pathogens are a major
cause of resistance to expanded-spectrum β-lactam antibiotics. Since their discovery in the …

CTX-M β-lactamases are considered a paradigm in the evolution of a resistance
mechanism. Incorporation of different chromosomal bla CTX-M related genes from different …

Objective. To describe antimicrobial resistance patterns for healthcare-associated infections
(HAIs) reported to the National Healthcare Safety Network (NHSN) during 2009-2010 …

The ability to provide timely identification of the causative agents of lower respiratory tract
infections can promote better patient outcomes and support antimicrobial stewardship …

Hypervirulent Klebsiella pneumoniae (hvKP) is traditionally defined by hypermucoviscosity,
but data based on genetic background are limited. Antimicrobial-resistant hvKP has been …

Objective. To describe the frequency of selected antimicrobial resistance patterns among
pathogens causing device-associated and procedure-associated healthcare-associated …

Urinary tract infections (UTIs) caused by Escherichia coli have been historically managed
with oral antibiotics including the cephalosporins, fluoroquinolones and trimethoprim …

Background. Escherichia coli sequence type ST131 (O25: H4), associated with the CTX-M-
15 extended-spectrum β-lactamase, has emerged internationally as a multidrug-resistant …

Background. Infections caused by extended-spectrum β-lactamase (ESBL)-producing
Enterobacteriaceae are increasing in frequency and are associated with high mortality rates …

Extended-spectrum β-lactamases (ESBLs), which hydrolyse extended-spectrum
cephalosporins and are inhibited by clavulanic acid, are spreading among …