High rate of aminoglycoside resistance in CTX-M-15 producing Klebsiella pneumoniae isolates in Tehran, Iran.

Objective: To determine the prevalence of extended-spectrum beta lactamases (ESBLs), the bla(CTX-M) genes, and aminoglycoside modifying enzymes genes in clinical isolates of Klebsiella pneumoniae (K. pneumoniae).

Methods: We collected 200 nonduplicate clinical isolates of K.